LCDModification1

Prévia do material em texto

LCD LED T.V Panels Modification
and Major Repairs
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Limit of Liability/ Disclaimer of WarrantyThe author Imran Ashraf and publisher of this E-book and the accompanying materials have,Complied from various sources and also own knowledge of repair filed and his best efforts inpreparing this book. The authors and publisher make no representation or warranties withrespect to the accuracy, applicability, fitness, or completeness of the contents of this Book.They disclaim any warranties (expressed or implied), merchantability, or fitness for any par-ticular purpose. The reader is expressly warned to consider and adapt all Safety precautionsthat might be indicated by the activities here in and to avoid all potential hazards. By followingthe instructions contained herein, the reader willingly assumes all risks in connection withsuch instructions. The authors and publisher shall in no event be held liable for any loss orother damages, including but not limited to special, incidental, consequential, or other damag-es. As always, the advice of a competent legal, tax, accounting or other professional should be
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Dedication
This E-book Dedicate to my late father Muhammad Ashraf, my Sweet
family and my Friends around the globe and My Pakistani friend
Naseeb Jan, they all helps me and support me a lot for preparation
this great e-book, Thanks all of you.
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LLLCCCDDD LLLEEEDDD PPPaaannneeelll FFFaaaiiillluuurrreee aaannnddd CCCuuurrreee
COLLECTION OF TRICKS & HOW-LED LCD TV SERVICE FROM
VARIOUS SOURCES RELIABLE TECHNICIANsHere is I reveal a big secrete of Panel repairing for you and a Chance to earn big moneyfrom it, Some LCD panel failures could possibly mistake for T-Con board issues. Otherthan damage to the LCD glass, most panel failures are isolated to a particular area of thescreen. Since the T-Con disperses the pixel data to groups of line and column drive IC’ssituated on the outer edges of the panel, it is unlikely that more than one of these IC’swould fail at the same time. Multiple columns of struck on or stuck off pixels are there-fore, more likely to be the fault of the T-Con circuits. The same applies to a single rowof lit or unlit pixels. The T-Con simply cannot cut out a single line of information.
L.C.D L.E.D T.V Panels Connection and Voltages UnderstandingHere we talking about the main voltages and pin connection of L.C.D and L.E.D T.VsPanels, every technician should know where to test and how to check voltages of eachconnection as they mention in Service Manual or schematic diagram or at least youshould know the basic working voltages.
Connection Name Connection Working Voltages
1. VGL in Driver negative P.supply1 Around -10.5v
2. VCL in Driver negative p.supply2 Around -10v to -12v
3. VSS Digital ground GND
4. VDD VDD is the logic supply input forthe scan driver.
5. VGH Supply LCM driver output Around 12v+ to 19.5v+
6. STV Vertical Sync Input. The risingedge of STV begins a frame ofdata. The STV input is used togenerate the high-voltage STVPoutput.
Pulse
7. CPV1 Vertical Clock-Pulse Input. CPV1controls the timing of the CKV1and CKVB1 outputs, whichchange state (by first sharingcharge) on its falling edge.
Pulse
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8. CPV2
9. V.COM out
Vertical Clock-Pulse Input. CPV2controls the timing of the CKV2and CKVB2 outputs, whichchange state (by first sharingcharge) on its falling edge.Common signal output TFT
Clock pulse
Signal pulse
10. POL in Supply input common sig-nal Signal
11. VDC in Supply +5.0v min
12. VON Gate-On Supply. VON is the posi-tive supply voltage for the CKV_,CKVB_, and STVP high-voltagedriver outputs.
Around 20v+
13. V-OFF Gate-Off Supply. VOFF is thenegative supply voltage for theCKV_, CKVB_, and STVP high-voltage driver outputs.
Around 8V-
Brief Details of Panels Connection Points
VDD VDD is the logic supply input for the scan driver.
VON Gate-On Supply. VON is the positive supply voltage for the CKV_, CKVB_, and
STVP high-voltage driver outputs.
VOFF Gate-Off Supply. VOFF is the negative supply voltage for the CKV_, CKVB_,
and STVP high-voltage driver outputs.
STV Vertical Sync Input. The rising edge of STV begins a frame of data. The STV
input is used to generate the high-voltage STVP output.
CPV1 Vertical Clock-Pulse Input. CPV1 controls the timing of the CKV1 and CKVB1
outputs, which change state (by first sharing charge) on its falling edge.
CPV2 Vertical Clock-Pulse Input. CPV2 controls the timing of the CKV2 and CKVB2
outputs, which change state (by first sharing charge) on its falling edge.
EN Enables the MAX17121. Drive EN high to start up the MAX17121 after a de-
lay time, which is set by a capacitor at DLY.
CKVB1 High-Voltage Scan-Drive Output. CKVB1 is the inverse of CKV1 during
active states and is high impedance whenever CKV1 is high impedance.
CKVB2 High-Voltage Scan-Drive Output. CKVB2 is the inverse of CKV2 during
active states and is high impedance whenever CKV2 is high impedance.
CKVBCS2 CKVB2 Charge-Sharing Connection. CKVBCS2 connects to CKVCS2
whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance)
to allow CKV2 to connect to CKVB2, sharing charge between the capacitive loads
on these two outputs.
CKVCS2 CKV2 Charge-Sharing Connection. CKVCS2 connects to CKVBCS2
whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance)
to allow CKVB2 to connect to CKV2, sharing charge between the capacitive loads
on these two outputs.
STVP High-Voltage Scan-Drive Output. STVP is connected to VOFF when STV is
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low and is connected to VON when STV is high and CPV1 is low. When both STV
and CPV1 are high, STVP is high impedance.
DLY Startup Delay Setting. Connect a capacitor to adjust the delay
DISH VOFF Discharge Connection. Pulling DISH below ground activates an inter-
nal connection between VOFF and GND, rapidly discharging the VOFF supply. Typ-
ically, DISH is capacitive connected to VDD, so that when VDD falls, VOFF is dis-
charged.
VCOM Operational Amplifier Output
CKV High-Voltage, Gate-Pulse Output. When enabled, CKV toggles between its
high state (connected to GON) and its low state (connected to GOFF) on each fall-
ing edge of the CPV input. Further, CKV is high impedance whenever CPV and OE
are both low and whenever CPV islow and OECON is high.
CKVCSCKV Charge-Sharing Connection. CKVCS connects to CKV whenever CKV is
high impedance to allow connection to CKVB, sharing charge between the capaci-
tive loads on these two outputs.
CKVBCS CKVB Charge-Sharing Connection. CKVBCS connects to CKVB when-
ever CKVB is high impedance to allow connection to CKV, sharing charge between
the capacitive loads on these two outputs.
CKVB High-Voltage, Gate-Pulse Output. CKVB is the inverse of CKV during active
states and is high impedance whenever CKV is high impedance.
STVP High-Voltage, Start-Pulse Output. STVP is low (connected to GOFF) whenev-
er STV is low and is high (connected to GON) only when STV is high and CPV and
OE are both low. When STV is high and either CPV or OE is high, STVP is high im-
pedance.
STV Vertical Sync Input. The rising edge of STV begins a frame of data. The STV
input is used to generate the high-voltage STVP output.
OECON Active-Low, Output-Enable Timing Input. OECON is driven by an RC-
filtered version of the OE input signal. If OE remains high long enough for the re-
sistor to charge the capacitor up to the OECON threshold, the OE signal is masked
until OE goes low and the capacitor is discharged below the threshold through the
resistor.
OE Active-High, Gate-Pulse Output Enable. CKV and CKVB leave the high-
impedance charge-sharing state on the rising edge of OE.
CPV Vertical Clock-Pulse Input. CPV controls the timing of the CKV and CKVB
outputs that change state (by first sharing charge) on its falling edge.
GND Logic Ground
DISH GOFF Discharge Input. Pulling DISH below ground activates an internal
connection between GOFF and GND, rapidly discharging the GOFF supply. Typical-
ly, DISH is capacitively connected to IN, so that when VIN falls GOFF is discharged.
VDD Supply Input. Logic supply input for the VCOM calibrator. Bypass to GND
through a minimum 0.1μF capacitor.
WPN Active-Low, Write-Protect Input. When WPN is low, I2C commands are ig-
nored and the VCOM calibrator settings cannot be modified.
SCLS Alternate I2C-Compatible Clock Input. When WPN is high, SCLS connects to
SCL to drive SCL from an alternate clock source.
SCL I2C-Compatible Clock Input and Output
SDA I2C-Compatible Serial Bidirectional Data Line
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WPP Write-Protect Output. WPP is the inverse of WPN. It can be used to control
active-high, write-protect inputs on other devices.
SET Full-Scale, Sink-Current Adjustment Input. Connect a resistor, RSET, from
SET to GND to set the full-scale adjustable sink current that is VBOOST / (20 x
RSET). IOUT is equal to the current through RSET.
VL 3.3V On-Chip Regulator Output. This regulator powers internal analog cir-
cuitry for the step-up regulator, op amp, and VCOM calibrator. External loads up to
10mA can be powered. Bypass VL to GND with a 0.22μF or greater ceramic capaci-
tor.
BGND Amplifier Ground
BOOST Operational Amplifier Supply Input. Connect to VMAIN (Figure 2) and
bypass to BGND with a 1μF or greater ceramic capacitor.
OUT Adjustable Sink-Current Output. OUT connects to the resistive voltage-
divider at the op amp input POS (between BOOST and GND) that determines the
VCOM output voltage. IOUT lowers the divider voltage by a programmable
amount.
POS Operational Amplifier No inverting Input
NEG Operational Amplifier Inverting Input
VCOM Operational Amplifier Output
SHDN Shutdown Control Input. Pull SHDN low to disable the step-up regulator.
The VCOM calibrator, op amp, and scan driver functions remain enabled.
IN Step-Up Regulator Supply Input. Bypass IN to AGND (pin 34) with a 1μF or
greater ceramic capacitor.
LX Switching Node. Connect inductor/catch diode here and minimize trace ar-
ea for lowest EMI.
PGND Power Ground. Source connection of the internal step-up regulator power
switch.
FB Feedback Input. Reference voltage is 1.24V nominal. Connect external resis-
tor-divider midpoint here and minimize trace area. Set VOUT according to: VOUT
= 1.24V (1 + R1/R2).
COMP Compensation Input for Error Amplifier. Connect a series RC from COMP to
AGND. Typical values are 180k and 470pF.
AGND Ground
GOFF Gate-Off Supply. GOFF is the negative supply voltage for the CKV, CKVB, and
STVP high-voltage driver outputs. Bypass to PGND with a minimum of 0.1μF ce-
ramic capacitor.
GON Gate-On Supply. GON is the positive supply voltage for the CKV, CKVB, and
STVP high-voltage driver outputs. Bypass to VMAIN or PGND with a minimum of
0.1μF ceramic capacitor.
EP Exposed Backside Pad. Connect to the analog ground plane through multi-
ple vias to enhance thermal performance.
CKVB1 High-Voltage Scan-Drive Output. CKVB1 is the inverse of CKV1 during
active states and is high impedance whenever CKV1 is high impedance.
STVP High-Voltage Scan-Drive Output. STVP is connected to VOFF when STV is
low and is connected to VON when STV is high and CPV1 is low. When both STV
and CPV1 are high, STVP is high impedance.
CKVB2 High-Voltage Scan-Drive Output. CKVB2 is the inverse of CKV2 during
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active states and is high impedance whenever CKV2 is high impedance.
CKVBCS2 CKVB2 Charge-Sharing Connection. CKVBCS2 connects to CKVCS2
whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance)
to allow CKV2 to connect to CKVB2, sharing charge between the capacitive loads
on these two outputs.
CKVCS2 CKV2 Charge-Sharing Connection. CKVCS2 connects to CKVBCS2
whenever CPV2 and STV are both low (to make CKV2 and CKVB2 high impedance)
to allow CKVB2 to connect to CKV2, sharing charge between the capacitive loads
on these two outputs.
CKV2 High-Voltage Scan-Drive Output. When enabled, CKV2 toggles between its
high state (connected to VON) and its low state (connected to VOFF) on each fall-
ing edge of the CPV2 input. Further, CKV2 is high impedance whenever CPV2 and
STV are both low.
STV Vertical Sync Input. The rising edge of STV begins a frame of data. The STV
input is used to generate the high-voltage STVP output.
CPV1 Vertical Clock-Pulse Input. CPV1 controls the timing of the CKV1 and CKVB1
outputs, which change state (by first sharing charge) on its falling edge.
CPV2 Vertical Clock-Pulse Input. CPV2 controls the timing of the CKV2 and CKVB2
outputs, which change state (by first sharing charge) on its falling edge.
N.C. Not Connected
EN Enables the MAX17121. Drive EN high to start up the MAX17121 after a de-
lay time, which is set by a capacitor at DLY.
DLY Startup Delay Setting. Connect a capacitor to adjust the delay based on tDE-
LAY= CDLYx 410kI.
GND Ground
DISH VOFF Discharge Connection. Pulling DISH below ground activates an inter-
nal connection between VOFF and GND, rapidly discharging the VOFF supply. Typ-
ically, DISH is capacitive connected to VDD, so that when VDD falls, VOFF is dis-
charged.
VDD Supply Input. VDD is the logic supply input for the scan driver. Bypass to
GND through a minimum 0.1FF capacitor.
VOFF Gate-Off Supply. VOFF is the negative supply voltage for the CKV_, CKVB_,
and STVP high-voltage driver outputs. Bypass to GND with a minimum of 1FF ce-
ramic capacitor.
VON Gate-On Supply. VON is the positive supply voltage for the CKV_, CKVB_, and
STVP high-voltage driver outputs. Bypass to GND with a minimum of 1FF ceramic
capacitor.
CKV1 High-Voltage Scan-Drive Output. When enabled, CKV1 toggles between its
high state (connected to VON) and its low state (connected to VOFF) on each fall-
ing edge of the CPV1 input. Further, CKV1 is high impedance whenever CPV1 and
STV are both low.
CKVCS1 CKV1 Charge-Sharing Connection. CKVCS1 connects to CKVBCS1
whenever CPV1 and STV are both low (to make CKV1 and CKVB1 high impedance)
to allow CKVB1 to connect to CKV1, sharing charge between the capacitive loads
on these two outputs.
CKVBCS1 CKVB1 Charge-Sharing Connection. CKVBCS1 connects to CKVCS1
whenever CPV1 and STV are both low (to make CKV1 and CKVB1 high impedance)
to allow CKV1 to connect to CKVB1, sharing charge between the capacitive loads
on these two outputs.
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EP ExposedPad. EP is not connected in the IC. The EP should be connected to
the ground plane on the PCB to improve thermal performance.
Example of TPS65167 Compact LCD Bias Supply for TFT-
LCD TV Panels
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Here is the test Case “Ghost Image with slow motion”
T-con 32” HV32320WXC adopted MAX17126
FAULT: Blurred image and not clear with slow motion like ghost, Check
test points at T-con DVDD=3.3v VDD=12v Vcom=5.6v Voff=-8v
Vref_FB=1v Gref=12v seems all normal while VGH=11v and Von=0v
Now the voltage VGH should be 24v based on the MAX17126 i.c,Now its
sure that MAX17126 is faulty.
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Solution: As an alternative supply instead VGH and Von I use injection of
24v volts from the back light power supply, to be more safety majors I put
up their respective series 100 ohm 0.25watt input, Now set works very
good.
Understanding the Tab, COF, and T-BGA
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Types of panels
Here we show you the types of Panels1. S-PWB with gate PCB (Side Pads) We found many open connection and we usejumper wire (I took this kind of wires from old dc motor of tape recorder)2. S-PWB without PCB (Side Pads) we also found open connection in these types ofpanels but fixing these types of panels is very extra ordinary delicate art and you
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should be aware how to deal with soft hands with extra care in this kind of opera-tion.
3. S-PWB without Gate Driver PCB or Chip (No Side Pad) Chance is very low formodification of this kind of panels, but we still using some tricks on that.
AAFFCC BBoonnddiinngg ffoorr UUnnddeerrssttaannddiinngg
1.COF Chip on Film
2.COG Chip on Glass
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Panel Cut-CircumcisionLED, LED panel damage of this kind is one of the damage that is often experienced. Alt-hough in a different shape or position, such as partial or one-third of the panel, but thesource of the damage is still almost the same. We can try to modify the source voltagesupply part (output voltage I.c scan MAX 17108) in order to supply voltage could beclose to normal, because we know that this kind of panel does not have the FPC to Rawdriver (scan driver).
Table for understanding
1. Unloading the entire casing panels to ensure that there is no path FPC (col-
umn) was burned.
2. Check all output voltages power Ic TCON correction when there were fewer
than all system voltages.
3. Bias problems arise here, in the IC MAX17108 scan driver. All normal volt-
age, but when flickering appears, then the level output voltage at pin 13-22 de-
creased, but remained constant in Ic output power (24V).
4.Coba disconnect pin out 21 lines leading to the FPC / panel, and re-measure
the voltage in the no-load condition (on tv), usually be constant pin 21 (+ / _
24v).
5. There is two alternative / option here could i.c are damaged (replace), or in-
deed the damaged panel.
6.When panel is damaged we can do a direct jumper between voltage power
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ICs out with path way in at FPC / panel we broke up earlier, r 10 ohm jumper
with a couple / safety.
7.Wait for a minute, and observe, if there is no path at FPC burning, and the
whole ic in TCON in normal temperature means successfully .But there is no
possibility of modification Set up the track
FPC burning, meaning that the panel is already severe (failed) clincher in cir-
cumcision (cut) ckv track, ckvb mas instead von, Voff one of circumcision Ante-
cedent circumcision (cut) ckv track, ckvb mas instead von, Voff one of circumci-
sion Samsung not succeeded in connecting again replace the existing right that
vv posts kb etc.In Panel Repair and Modification we try to connect open links from PCB to Pads asshown in picture there is Side PCB Gate Driver boards of Panel, Some times we cutsSignals like CKV Tracks.
TEST CASE TV - SONY KLV-32EX300 (PANEL) - LTY320AP04
T-CON ON A PLATE: 320AP04S4L V1.7,
Defect The image is not clear with horizontal stripes.
Solution: Was found On the recommendation by my friend, Cuts the track signalsCKV1, CKV2, CKVB1, CKVB2, STVP, and VOFF not planted, artifacts found. Runningfootage disappeared, increased clarity, some loss of rows left to repair.
TV - SONY KLV-32EX300 (PANEL) - LTY320AP04
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T-CON ON A PLATE: 320AP04S4L V1.7,
Result after Cutting Tracks CKV
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Example of TCP
Here we show you the new TAB COF I.Cs and there is a method with pasting and bond-ing using with machine, these kind of Tab are available in world market like china andSingapore, you can order online from the internet.
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Only Bonding Machine can replace New Tabs
TAB COF for LCD & LED TV
LCD LED Panel Repair Machine
Test Case for Model: TLM4236P Movement: LCD-MST6
Symptom: Have audio but No Picture and black screen
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Analysis of maintenance: power on check the backlight is bright, detecting screen pow-er supply 12V normal. Normal remote control switch machine, indicating the controlpart of the motherboard is working properly. Focusing on the logic board on the checkLogic board mainly by the format converter and DC/DC converter circuit. Because thescreen is not lit, so focus on DC/DC converter circuit check, for easy maintenance, abrief analysis at the circuit control process.VCC-PANEL enter the UP1, 21, 22 feet, converted through a chip from the 18th pin(SWB) UP5 output 2.5V voltage regulators get 1.8V provides format conversion chipsupply. UP1 11th foot (DRN) DP7, C227, UP1 foot booster circuit consisting of an outputvoltage of around -5.6V VGL provides negative pressure for driving power.2.5V UP1chip detected after work, LP7, LP2, DP2, DP6, UP1 feet (SW) 5 pin (SW) internal circuitvoltage boosting circuit start? Work? the output voltage of 16V, UP1 feet (GD) providesan open signal for QP1 and QP2, 16V over QP1,QP2 VDA voltage driving circuit forpower supply.When the above circuit normally work, VAAP vetted by DP5, CP18, UP1 feet (DRP) con-sisting of internal voltage boosting circuit was working properly, and got VGHP byRP21 current voltage, VGHP QP8 output voltage of 22V about VGH provide power forthe drive.From the above analysis we can see that when the circuit starts working normallystrictly temporal relationship exists. This timing check voltage of all found only 10.5VVGHP voltage, normal for 19.5V.VGH voltage is 0V, normally should be 18V. There is aclear problem is caused by VGHP voltage is not boosting properly.The UP1 10th pin voltage is 0V, normally pin 10 should be able to detect the 2.25V ofDC voltage, AC test 5V AC voltages, but measuring AC and DC voltage not detected.Measurement of resistance the feet on the ground, nothing suspected UP1 foot internaldamage, troubleshooting after replacement.
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V420H1-C07 logic board picture Model: TLM40V68P Movement: LCD
LCD-MST6M68FQ.
Symptoms: Test Case of LCD, LED white screen.
Analysis of maintenance: Power the inspection showed that the machine startsnormally, but hold on longer, after and lit a white screen, sound and other functions arenormal, so the fault identified on the logic board.First detection logic board the road powered, found VGHP detection points no voltage,and normally this detection points due 19.5V voltage, again measuring other severaldetection points voltage normal, remove logic board, measuring VGHP voltage outputend on to resistance for 0 volts, apparently this problem is due to no VGHP voltagecaused, dang remove filtering capacitor CP19 , complex measuring VGHP output end onto resistance recovery normal, will logic board loaded back original machine, boot faultremained, again measuring still no VGHP voltage.Test UP1 pin forward normal DC 5V output 2.25V and communication, VAA 13V nor-mal voltage detection point, led to the identification of VGHP voltage is for DP5-freeway,Directly after the replacement boot test after normal 19.5V voltage VGHP voltageoutput, machine back to normal.
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Formation because the failure analysis VGHP voltage is provided to gate-level of highpotential, which opens the gate-level voltage, when LCD LCD screen loses the voltagewill cause internal TFT LCD LCD screen is not working properly with this type of fault.
Conclusion: logic board mainly consists of a format converter and DC/DC convertercircuit. By the process of analyzing and removing these two faults, we can see that most
of the fault lies with the logic board DC/DC converter circuit. For the maintenance ofthis portion of the circuit, as far as the structure of its circuits are not difficult to under-stand, the key point is to familiarize yourself with its timing control and 5 large voltageDC/DC converter circuit. Also needed a mention of is, in we of maintenance practice ex-ploration in the found, logic board Shang by with of components in market is complete-ly can procurement to of, and price very low, on above two a fault of maintenance, itsmaintenance cost are insufficient 30 USD, only for Board level maintenance price ofone-tenth, so for LCD TV logic board of maintenance not only is technology level of de-velopment and beyond, and also is more with Future of.
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Example VGH voltage timing control circuit diagram
Format converter part CM2679B-KQ voltage regulator power supply
schematic diagram
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LCD TV Philips 26PF3320 LC4.1EAB,
Philips LCD With long-suffering QD26HL02 Panel Production QUANTA DISPLAYS.
Fault: Black screen When testing regimes on board T-Con, it was revealed that thedrain of the transistor Q101, instead of 12 volts in just 0.5. Transistor Q101 (markingWZ) - P-channel field researcher. Through the transistor, organized DC-DC power con-verter after replacing all return, the picture is back to normal.
Many Friends of mine ask me For Self Monitoring System of LCD LED TVs’
Actually in some brands Like Sony Sharp Panasonic and many other have
their own detecting method of problems, they use Front LED blinks as a
code, when you trying to service these types of Brands you should aware
Blink codes of specific models, here is an example of few LCD LED TVs’ for
understanding blinks code.
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Sony LCD Blink Code
Sony LCD TVs’ Blink Codes
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Study Case
Panel failure of LCD-TV using BN07-00364A (V260B1-L04) -LE26R32,
LE26R81, We usually met below symptoms:
This is a Test Case and this will be helps you a lot in future repairing.
Blank image (white) at startup, correct image appearing after 5-20 min - sometimes over
blank Image appear some H-lines, the number of lines and position on display is different at
consecutive startups. During operation, the image becomes “still” and after turning to
white, disappearing. In both above cases the display is sensitive when torsion it, close to
moment the image appear (first case ) or “still” ( second case ) .
The cause of above symptoms is the failure of one of contacts between the first IC-FPCB in
the upper-left corner of display and upper long and narrow PCB of display. Unlike the rest of
FPCBs with drivers for vertical lines , this one have some circuits that just passing through it
, to some circuits over panel glass , and through these , to the first of three drivers for H-lines
on left side of panel glass .
The access to “long-and-narrow” PCB in the upper part of display, and to FPCBs is only
possible after removing of front metal frame of LCD display (fixed in 10 screws) .
The T-Con board must also be removed.
The repair solution described below requires good skills, so please don’t do it if
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you haven’t done operations of similar complexity. In pictures P01, P04, P05, P06 is
described the correspondence between pads on first upper H-driver (please note that
pads are accessible below H-driver FPCB when LCD display is on the table) .
Attention! All of these pads (numbered in P01 from 1 to 15) are covered with a green flexi-
ble paint. To detect the interrupted circuit, please scratch gently the paint on the center of
each pad (P03.jpg) to can contact them with the tester of multi-meter.
I recommend using for scratch a new surgical scalpel (curved, not straight). It is very im-
portant that the scalpel to be a new one, not a blunt one. Attention!!! Be careful when scratch
center of pads; don’t touch with scalpel the thin circuits near the pads.
For easily access to pads and to avoid the dust and foreign materials to enter between
backlight and LCD-panel, carefully and gently lift up the driver FPCB and fix it with adhe-
sive tape in vertical position to don’t excessive stress the FPCB, but enough to can access the
pads with scalpel, tester and soldering iron. If you consider unsafe lifting of driver FPCB, is
better to lift the whole LCD-panel (glass) and put it “up side down “ , but take care of any
dust and foreign object to avoid dirty the display . Take care also of driver FPCBs between
the long upper PCB and display, don’t excessive stress them.
The most frequent circuit found interrupted is that one corresponding to pad numbered 10
( P01.jpg ) and indicated in P03D.jpg .
For easily measurement, please measure the continuity of this circuit to the pad numbered
10 in P06.jpg, near the connector to T-Con board.
You can read below the normal resistance values for all circuits (all are so big values
because of thin circuits on the glass) .
There are also the normal voltage value that can be measured during function and the
voltage drop on each circuit (where is not specified, is below 0.1mV)
Please note that pads numbered with 11, 12, 14 are not connected, so don’t
measure them.
1 -> 1
st
line (-5.5V)
2 -> 13Ω ( -5.51V , 7mV )
3 -> 17Ω ( +21V , 12mV )
4 -> 13Ω ( -5.51V , 8mV )
5 -> 50Ω ( 3.29V , 4.1mV )
6 -> 61Ω ( GND , 3.5mV )
7 -> 91Ω ( 3.3V )
8 -> 84Ω ( 917mV )
9 -> 84Ω ( 1.73V )
10 -> 84Ω
13>20Ω(+5.37V)
15 -> 84Ω ( 3.3V)
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In case you find interrupted circuit corresponding to pad 10 (or resistance >> 84 Ω)
, this must be bypassed with a thin wire 0.15 mm ( thermoplastic insulation prefera-
bly ) .
Please cut first the wire at 120mm length and tin it with soldering iron ( max 1mm ) .Also ,
tin with soldering iron ( adjusted at 270°C )the pad numbered 10 on FPCB , only where paint
is scratched ( P07.jpg ) . Please use normal soldering alloy (40/60) not Lead-free .
All these operations must be done with the display disconnected (and completely isolated
from any metal part of table), using the antistatic bracelet connected to soldering iron
ground contact.
Please solder an end of prepared thin wire to pad 10 (P08.jpg, P09.jpg) .Release the driver
FPCB by carefully and gently unstuck of adhesive tape. Don’t excessive stress the FPCB
.Prepare a 5mm strip of adhesive tape and stick the FPCB ( P10.jpg ) .Position carefully the
wire ( P11.jpg ) , fixing it from place to place with thin ( 3mm) strips of adhesive tape .Find
the crossing hole numbered 10 in P04.jpg , P05.jpg and tin it with soldering iron .
If you consider difficult to use this point to solder the wire, you can use the pad near the
T-Con connector (P06.jpg) – but you must use a longer wire. You also must take care to
isolate it along its route.
Solder the end of wire on prepared cross hole ( P13.jpg , P14.jpg , P15.jpg ) - or to above
specified point , and after , fix the rest of wire (P13.jpg ) .
In case you don’t find at first measurement an evident interruption of circuit corre-
sponding to pad 10, before solder the wire to cross hole connect again the ohmmeter
between end of wire and pad 10 near connector, and gently touch the side of upper
driver FPCB (the side near the display side) and look for a resistance variation. Ifyou
don’t observe any variation, you must search another interrupted circuit, and bypass it
too. ( 10 must be bypassed anyway ) .
Picture01 Picture02
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Picture 03
Picture04
Picture05
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Picture06
Picture07
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Picture08
Picture09
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Panel Number Picture10
Picture 11
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Picture12
Picture13
Picture 14
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Picture15
Picture16
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Picture17
Here we show you different type of panels and Modifications:
PPPaaannneeelll MMM222666000TTTWWWRRR111 Manifestations of the same defect and the reason is similar,Many times we found VGL, VGH, open circuit with the circuit board, Use thin wire forreconnection.
BBBoooaaarrrddd111
BBBoooaaarrrddd222
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When you try to Modify LCD Panels you should know the Basic knowledge of
these connection as I mention.
1: VGH: V gate high refers to the gate-level of high potential, which is open, the gate-
level voltages.
2: VGL: V gate low, is a gate-level low voltage, that is, close the gate-level voltage, this
voltage when the second order driven, Third-order driven, this voltage is only used to cre-
ate V gate off low.
3: VgoffL: V gate off low, the gate-level closed low voltage level (using the third order
driven, by a voltage conversion circuit VGL get).
4: VgoffH: V gate off high the gate-level close the high voltage level (used in a third-
order-driven, to get rid of when you closed a gate-level by the storage capacitor (CS ON
GATE) caused by voltage change), it basically can be thought of as the value of Vgoffl+Vcom
Some IC information above only refer to VGH and VGL, because this IC support second or-
der-driven, some IC information above VGH, VGL, VGOFFH, VGOFFL, it is because of this IC
support second-order and third-order driven. VDDG,VEEG for second order-driven GATE
switching levels.
5: VCOM: Deflection of LCD reference voltage; VDDA on the PCB through the voltage di-
vider circuit split into 10~14 Group, as IC VGMA the output of the internal DAC reference
voltage through the PCB potentiometer circuit, resulting in multiple sets of reference volt-
age, IC internal voltage divider circuit can be reduced.
Samsung LE40B553M3W use Panel LTF400HA08, 602WK81AC-
X01.
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Fault: Braking out with periodic disappearance and falling in inhibiting vertical
colored stripes.
Measurements of the left side showed.Von -11.8 ohms , CPV2 -114,8 Ohm , CPV1 - 114,9 ohm , STV - 118,2 OhmIn any case, they duplicated (pic1 and pic2) But with the right side interesting:Von - open permanentCPV1 - 121,3 OhmCPV2 - 119,0 ohmSTV - is 115.7 ohms, breakage,duplicated (see pic3 and pic4) .Note the sequence of different signals on the sides andCPV2 CPV1.
Here we show you connection in yellow mark for circuit board.
Here is a Circuit board for yellow to red mark connection
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Here is a 2nd side of the side board and main circuit board, use thin wire for this connec-tion
Samsung LE32T51BX. Panel T315XW01 V.5 T-con
T315XW01_V5 05A09-1C.In t-con available DC/DC MAX1518E
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Symptoms: when you turn on a dark gray background, sometimes turning into whitedark gray. May be involved with the normal image if distort plug supply. When thenormal image after a while the right half of the mattress can go vertical stripes pillars.When you turn on a gray background, it was revealed the absence of voltage 13,3 V,VGH, VGL with MAX1518E.
Solution: In the end, after three days of suffering with this panel, MAX1518E re-placement several times (initially went astray with MAX1518E, panel and lay downmattress I could see only a certain part of the left panel), the throttle PWM entire bind-ing - was identified B1 unpredictable the choke plate on the right mattress for 3,3 V (J3connector 16-19pin) on decoders, which gave an overload when the MAX1518E andmaintenance thereof in protection or the right half of the strip if the throttle broke offafter the normal image.
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LTA320AP02
Fault: 3/4 bottom image shows the distortion, the top band is the norm.
T-CON: 320AP03C2LV0.1, Sharp: 320AP02S2LV0.1
CURE: On the right side strap cut the wires: CKV1, CKVB1, CKV2, CKVB2, STVP2.
band remained.
A similar panel LTA320AP02
Defect: The screen is divided almost in half, top normal, low distortion.
CURE: first tried to loop tape slapped: CKV2, CKVB2. The image became normal, theband was not, but began to show artifacts (toffee), and only on the schedule! When thegraph disappears, and a minute later they disappeared. From static channel icons didnot show up. Finally on the right side strap cut the conductors: CKV2, CKVB2 and putthem together. Artifacts were gone, out. Normal, but there was a band barely noticea-ble. (Most on a blue background)
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HOW TO DIAGNOSE A FAILED T-CON BOARD - HOW TO REPAIR A T-CON
BOARD
T-Con boards
Sony KLV-32T400A AS-15F Problem
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T-Con board AS-15HG problem
DIAGNOSING A FAILED T'CON BOARDAll video inputs received by the video process circuits are handled on a frame-by-frame basis. The video frames are converted and scaled to 8 to 10 bit RGB information.It is virtually impossible for the video process circuit to cause a problem on a specificarea of the screen. Failures on this board usually appear as distortions, color levelshifts, video level shifts or noise that involves the entire picture. The T-Con can gener-ate symptoms that appear to be video process related, but the video process circuitcannot produce the symptoms of a failed T-Con board circuit.
T'CON FAILURESFailures in the timing control circuits of the T-con can produce symptoms of absolute-ly no video or generate lines and patterns that usually cover all or a substantial part ofthe screen. Determining if the T-Con is the cause of a ‘No Video’ condition is a bit moredifficult since there are no indications on the screen to analyze. Negative picture alsocomes from bad Gamma correction i.c of AS-15F, many of the Sony TV models of the lastfew years will detect a T-Con that has completely failed. The communications data be-tween the video process circuits and the T-Con will cease to communicate, if the T-Confails completely. This will cause the TV to shut down and display a diagnostic code, in-
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dicating a failure of the T-Con. Not all chassis designs have this feature and it is notfound on older models. The typical scenario when this failure arises is for the techni-cian to bring a video process board to the repair location.
Gamma Correction AS15-F HX8915-A SL1014
Bad Gamma Correction Examples
SL1014 Fails HX8915-A Fails
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Samsung T-CON Problem
12v Missing Samsung T-con Faulty SMD
It is usually safe to assume that the problem lies on the T-Con board, if the replacementvideo board dos not give a solution to the problem since it is highly unlikely that a re-placement board with the same failure was received. One trick to check most T-Consfor functionality is to loosen the LVDS connector at the T-Con while unit is turned ON.Handle the LVDS connector with care and be certain to fully release the lock tabs. Gen-tly rock the cable in and out of the connector while observing the screen for any re-sponse.
Depending on the chassis, the symptoms of the screen ma be gentle white flashes, in-termittent colored lines, or a screen full of random patterns. The idea at this point is toprovoke some kind of response on the screen. Another helpful procedure is to rapidlyheat and/cool the T-Con with a hot air devices or circuit coolant and watch for patternsappear on the screen,Here we show some different voltages and signals of SamsungBN96-07611C T-Con board for understanding when you test t-con boards you shouldknow the basic voltages.
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BN96-07611C
Philips T-Con Dead Failed
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Sharp 46” T-Con Failed X3853TPZ
Samsung T-Con Failed
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Sony Bravia T-Con Failed
Philips T-Con Failed
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Modification of AS-15-F IC in Sharp LCD TV
Problem: Picture shows like a green Ghost all over the screen also OSD shows withGreen Shadow.
SOLUTION:This is a typical AS-15-F Problem and we show the Solution By pass method, just openpin 20 and pin 23 and use jumper wire pin 18 to R431 set works fine, you can use thistrick in many other brands.
SSAANNYYOO 4422CCAA88ZZ::
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PPrroobblleemm:: BBlluurrrryy iimmaaggeess oorr bblluurr iinnccrreeaassiinnggllyy ggrraayyiinngg ffaaiinnttllyy vviissiibbllee iimmaaggee
SSoolluuttiioonn::TTiimmiinngg ccoonnttrrooll TT--CCoonn tthhaatt uusseess IICCAASS1155GG DDaammaaggee ooccccuurrrreedd iinn tthhee TT--CCoonn bblloocckk we usehot air for replacing this I.C.
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Understanding of LVDS cable failuresAlthough the problem with LVDS cable or connectors can generate symptoms of T-Confailures this usually tends to be intermittent and wiggling of the connectors will usuallyprovoke a change in the symptom on the screen. LVDS cable and connectors have be-came rather robust over the past few years. Technicians who damage them cause mostproblems and this is generally quite oblivious upon close examination.
LVDS CABLE
T-CON REPLACEMENTIn many instances, replacement of the T-Con board will be relatively straight forward.In some case, the other boards may have to be loosened or removed to allow access tothe mounting screws and clearance to remove the T-Con board. The issue of most con-cern is keeping track of the heat transfer pads, stand offs and insulators. The T-Con isheavily shielded and it is ease to have one or more of these components accidentally fallout of the assembly when removing. T-Con assemblies that use multiple heat transferpads must be removed slowly and every attempt must be made to keep the shield andcircuit board together as they are removed from the unit. Check for any service bulle-tins pertaining to the model and panel design that contain the subject lie of T-Con heattransfer pad locations’ for pictures to show the proper location of these components.This site itself has covered disassembly procedure to some model LCD TVs, here. Pull
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up older posts here, or see the site in Time Slide option, which can be accessed by thedrop down at the top left side of the display window. It will make search the easily.
Remove the screw from the LVDS cable ground strap so the cable can be moved away.Unplug the connector to inverter board and remove harness from the retainer. Removeall screws securing the board sub-chassis to the panel. Pull the top of the board towardyou and downward to allow access to the bottom screws securing T-Con. The positionof screws and disassembly method may vary set to set.Carefully unpeel the conductive tape from the top bracket taking care not to tearthem. Leave the tape attacked to the T-Con shield. Remove the top bracket coveringthe gate and source driver components. This will allow access to the upper flat cableconnectors, if any. Carefully lift the locking tabs securing the flat cables. Leave the fatcables attached to the T-Con and shield assay. The T-Con board will have an insulatingpad between it and the LCD panel that will cause the board to stick. Not much effort isrequired to release it. The goal at this point is to remove the board and shield togetherso as to avoid dropping heat transfer pads and insulators located between the front ofthe board and the shield. If successful, both components should stay together as insu-lated. Note the spaces mounted on the backside of the board. These will need to betransferred to the replacement board. Lift the circuit board upward slowly while ob-serving the location of the heat transfer and insulating pads. In most cases the heattransfer pad will remain attached to their appropriate ICs and the insulating pads willbe struck to the shield. If anything falls off, use the instruction to return them to theirproper position. Transfer all heat and insulating pads along with the flat cables to thereplacement board. Once the components have been transferred to the front of the cir-cuit board, attach the shield and flip the assembly. Transfer any spacers or insulatingpads to the replacement bard. Temporarily secure the T-Con board to the shield withelectrical tape. This helps in preventing movements of the circuit bard while installingthe assembly back into the LCD panel. Once the T-Con assay is secured to the panel, in-sert and lock the flat cables.
Cable Fault
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Plug in all connectors and secure the board sub chassis. Do not forget about the wireharness that was removed from its retainer.
SAMSUNG UN40C5000QFXZA TROUBLESHOOTING VIDEO PROB-
LEMS1. Verify Video Operation a. Customer Picture Test (models available)b.“Display” (If display is OK source is suspected)C. Substitute with knowngood Source(external DVD or Signal Generator)2. Using Test Patterns in Service Mode -ENTER SERVICE MODE –1. Select anactive source signal. (HDMI preferred)Test Pattern may rely on signalSource to appear. Customer Remote Service Remote2.Power off 2. Power On3. Mute, 182, Power 3. Info, TestPixelization can be caused by the main board, but is more commonly a source error
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If Picture & Display errors Defective Main Board, LVDS, or T-CON
Green lines or a green screen defective main board , LVDS , or T-CON.
Vertical or Horizontal Lines: Defective Panel likely but also T-CON, LVDS, or MainBoard. Use Test Patterns in Factory Service Mode to determine error.
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Check/Perform Firmware Upgrade for all repairs.
Perform reset in Service Mode & Plug and Play if Main board is re-
placed.
AALLIIGGNNMMEENNTTSS::11.. CChheecckk//SSeett OOppttiioonn BByytteess::22.. CChheecckk//PPeerrffoorrmm FFiirrmmwwaarree UUppggrraaddee ffoorr aallll rreeppaaiirrss..33.. PPeerrffoorrmm rreesseett iinn SSeerrvviiccee MMooddee && PPlluugg aanndd PPllaayy iiff MMaaiinn bbooaarrdd iiss rreeppllaacceedd..
To enter Samsung Factory Mode:
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Toshiba 32AV500PSGSome Times Problem similar types like a bad T-con or a Bad Panel but in Toshiba32AV500PSG we Found Bad eeprom in main board Fault, See this picture.
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SAMSUNG LE32A430T1XRU model LE32A430T1 version CN04
Defect: low-contrast negative image with a blue-green moiré in the light areasand dark red on. When you turn on AV signal without a dark screen instead of uniform-ly red. Screen, Have tested T-CON normal (compared with a working t-Con), flashingeeprom (bin with the worker) did not produce results. SDRAM also found good.
Cure: CCoommppoossiittiioonn :: PPaanneell CCHHII MMEEII VV331155BB11--LL0011 TT--CCOONN ,,LLVVDDSS ccoonnttrroolllleerr CCMM22668811--KKQQ
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,,2244LLCC112288 ,,AASS1155--GG DDCC--DDCC ++ AATT11338800AAPP ffiieelldd rreesseeaarrcchheerr ssooiiss88 ,,SSDD RRaamm 22pp..EEMM663366116655TTSS--77GG MMaaiinn BBooaarrdd VVoollttaaggeess 22VV55,, 33VV33 aarree ggoooodd,, Work on resistors from LVDS to CM2681updated. Replaced AS15-F to HX8915 tested Fine.
QUANTA QD32HL01, T-CON V32C SF0.17MB15E MAIN-3,BP 17PW15-8
FFAAIILLUURREE:: WWhheenn tthhee ssccrreeeenn iiss ddaarrkk tthheenn ((11 mmiinn)) hhoorriizzoonnttaall bbaarrss ppaassssiinngg tthhrroouugghh aaccoouuppllee ooff mmiinnuutteess iinn tthhee 11--33 iinncchh vveerrttiiccaall ccoolluummnn..
SSSOOOLLLUUUTTTIIIOOONNN:::HHeerree iiss II rreevveeaall aa bbiigg sseeccrreettee ooff PPaanneell rreeppaaiirriinngg ffoorr yyoouu CCoonnnneeccttBBrraacckkeett TT--CCOONN ssiiddee bbooaarrdd wwiitthh mmaattrriixx cchheecckkppooiinnttss VVGGLL II uussee aa tthhiinn EEnnaammeelleedd wwiirree ooffccooppppeerr ttoo tthhee eenndd ((ooff ccoouurrssee wwiirreess)) ccaann uussee tthhee ssiiddee ppaadd VVGGLL ppooiinntt,, IInnvveerrtteerr bbooaarrdd aallssoohhaadd bbaadd eelleeccttrroollyytteess ccaappaacciittoorr aanndd wweerree rreeppllaacceedd wwiitthh nneeww oonnee,, SSeett wwoorrkkss lliikkee nneeww..
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SSaammssuunngg LLEE3322BB445500CC44WWXXRRUUPurple color all over the screen also when you try to enter the setting manually TV re-ports that "all stored settings will be erased, also replace eeprom but not correct thecolor problem now check 24v at AUO board its shows low to 18v .
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AUO Board
Horizontal stripes Panel Number T315XW01 VC VThis is a T315XW01 VC V Panel and its used in many LCDs T.Vs and Verycommon Fault in this kind of panel famous for open VGH and VGL Top Boardto Side motherboard of Panel contacts VGL and VGH respectively open whenits test by digital meter, I put a two jumper wires between (See Arrow mark)VGL and VGH to side board VGL and VGH points, Now panel Works Fine. I fixmany of them.
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See Red Arrow Marks on Side Board VGL and VGH.
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LCD LC-32A1 PanelV296W1-C1 X7 ,T-con V296W1-C1 X7
Problem low contrast, whitish imageBy Measurements on T-con showed VGL -5.5V,VDA 13.3 V, VGH 20.2 V, VDD 3.3 V, andHere VCM 3,2 V instead of the 5,6 V. removing R117 and icing diode resistor chain fromthe point to point VCM VDA and is limiting zener voltage of 5.6 volts the problem was
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solved.
Here is I reveal a big secrete of LED Panel CLAA215FA04S
LED panel CLAA215FA04S As it turned out, the problem is quite typical for these pan-els open signal VDDG_FLK. Only problem is only that the "pads" no checkpointVDDG_FLK, which can be soldered, link wire directly to the track. Here I can show youthe check points Solder VDDG_FLK to Board.
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SAMSUNG LE26C350DW SAMSUNG LE26C350DW and they use Panel
T260HA01-DB.
Problem: Plain white screen now here is I reveal a big secrete for you its OOOpppeeennnVVVGGGHHH Sold a thin link wire to VGH Side board and Panel VGH point….Happy RepairingDay.
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LCD TV Use Panel V315B1-L01 T-CON V315B1-C01
Symptom: When using the screen goes blank, white screen appears with bands
propagate at Different times but in10 minutes. They appear faster in heated ma-
chine.
I reveal a big secrete for you !In the diagnosis of detecting the absence of VGL And understated VGH (18V).Now Here is I reveal a big secrete of this fault its Periodic open capacitor C45 1,8nFconnect to processor pin 41. Replace with new capacitor restore the original picture.
Periodic open capacitor C45 1,8nF
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Samsung LE26S81B, V260B1XX
Problem: Bands appear immediately after switching on the power supply, all othervoltages are normal in power supply.Now I reveal a big secrete for you!Point STV-1 between the top-and medium-side driver board are open. Sold a thin wirewith STV-1 to side board, Now Set works fine.
LCD TV Polar 32”
Problem: Ghost image on every channel you can see the picture of culprit.
Now I reveal a big secrete for you!There is NO voltage on the T-CON at the point of V ON, Must have +20 to +24 V.Now I Pick a piece of insulated wire and soldered point V ON ,the T-CON board via re-sistor 15k ohms with +20 V (VD806, C817 +) on plate -PLT 203-2 BP + inverter.(See themodification Method in picture two).
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LTY400HC02 and Sharp LHI169k 01Panel
Fault: Some times pictures comes and went blank with black screen, Here is I reveal
a secrete for you, this is just because of interment open linksvon,vcom,cpv1,cpv2,stv,vdd,voff, use a thin wire for connection.
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Panel LC420WX5 Used in Many LCDs TVs’ LG, PHILIPS
Defect; Dark screen, insulation and OSD interment problem. Picture come and blankhim self, some times its come back him self. Inscription on Shield panels LC42WX5 (SL)(D1) on the T-Con LC42WX5-SLC2
VGH VGL,VCOM,5v and other shows in pictures you can soldered from the lefttabs to driver upper board ,use a thin wire to reconnect it. (Many Thanks to my RussianFriend)
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SAMSUNG LTA320WT-L05Samsung Panels major problem at No Supply Von-24V to side drive. Its was caused tofaint image, some times slow motion picture Von on the panel jumper and the thin wireto circuit board as show in picture
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Panel Samsung LTA320W2-L13, pay T-CON: 320W2C4LV6.4Composition Motherboards T-CON: controller LRX4222T3, K4D263238F RAM,EEPROM 24S64WP.
Problem: Still Image Some blurry picture, Slow Motion Pictures, OSD also react veryslow.
Cure: Von should be 24v volts but there is nothing at side pad, I use thin wire forconnection V-on as I show in picture where and how to sold the jumper wire.
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Samsung LE32R71Composition: Scalar SVP-PX56, VIDEO RAM K4D263238, percent S3F866B, and PanelAUO. Photo number 1 and number 2: Taken from Solution: Problem was resolved byreplacing the chip scalar IC500 SVP-PX56-7256.A so- same for a given fault is possiblemanifestation failure of IC222 (RAM K4D263238) X500 (28 MHz) replacement.
,
SHARP LC Models ,LC Model P50-70 and LC ** GA (D) Type.
INGREDIENTS: CPU, IT ALSO SCALAR MICRONAS VCT6973G
SOLUTION: IN THE SERVICE MENU TO PERFORM EEPROM CLEAR B (RESTORE NVM DATA
TO DEFAULT VALUES EXCEPT ADJUSTMENT DATA).
SO ALSO, IN CASE OF FAILURE OF THE RESET SERVICE MENU, PROBLEM SOLVED BY FLASHING
MICRONS.
HERE I TELL YOU HOW?
LOG IN SERVICE: 1 - UNPLUG THE AC POWER CORD OF TV SET TO FORCE POWER OFF.
2 - WHILE HOLDING DOWN THE "VOL (-)" AND "INPUT" KEYS ON THE SET AT ONCE, PLUG
IN THE AC POWER CORD TO TURN ON THE
SET. THE LETTER K APPEARS ON THE SCREEN.
3 - NEXT, HOLD DOWN THE "VOL (-)" AND "P (V)" KEYS ON THE SET AT ONCE.
4. THE SERVICE MENU K_MODE: TURN OFF THE TV FROM THE NETWORK, PRESS THE VOL (-
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) "AND" INPUT "KEYS, PLUG IN AND HOLD THE VOL (-)" AND "INPUT" KEYS UNTIL THE
PICTURE APPEARS. INFORMATION TAKEN FROM.
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Photos defects panel Not Repairable
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Plasma Displays SAMSUNG Models
** 42D5S *, ** 42S5S *, ** 42P5S *, ** 42V6S, ** 42C7, ** 42C9,
Fault occurs defective discharge. Problem may occur immediately or with heat-ing, in most cases, helps software update fees CTRL. It can also help control reset pulsefronts; knobs are located on the Y-board.
Samsung LTA320WT-0Problem is the failure of the backlight (CCFL).At the time of inclusion, clearly visible uneven illumination, where light-dead payattention. First photo spot is seen in the lower right corner. Treatment method is sim-ple- change the lamps.
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LG model15LS1R CL-81.FFaauulltt MMeennuu ddooeess nnoott aappppeeaarr ccoorrrreeccttllyy PPrroobblleemm--bbuuss iinn--tteerrrruuppttiioonn SSCCLL aabboouutt EEeepprroomm.. AAfftteerr RReeppllaaccee tthhee uunniitt ttuurrnnss oonn nnoorrmmaallllyy,,
LG LCD 22C30 Plain White Screen
CASE:LCD LG 22C30 (T.con board so one panel) Problem lit only plain white screenExperience on a small screen LCD LG - plain white screen lights can usually be causedby Last LVDS cable to the panel not getting supply (6 or 12v) Fuse-chip to supply todisconnect panel .
SOLUTIONSAfter opening the rear cabinet cover - directly open the lid cover panel-boardFuse check-chip LVDS connectoris very close and disconnect or break Try using alter-nate fuse fusible resistors ohm 1/4W 0:22 and as a result directly out of the picturescreen .Its relief me that panel not damaged.Dictionary: Fusible resistors (FR) is a resistor that specifically designed it all as a fuse.Signs of this type of resistor is dirty white body or abu2 (not shiny). Commonly foundfor example in the fly back circuit supply to the instructions in the vertical or 180V.
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Model: Sony KDL-40W3000 Panel:LTY400HA01 Fault:Frequent vertical stripes in the image across the screen Solution Problem T-CON boardwas in comparison modes and charts with the workers managed to localize the defectcame under suspicion SDRAM (IKM1- K4D263238) - dips in packages targeted,unfortunately Sony does not allow repair T-con boards and provide SDRAM.
Model: Sony KDL-40W3000
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Apparatus BBK model LD1906K,
Fault: lay in the fact that when the image appeared in just 30 seconds, the red almostwas not there, in service mode, it was clear that the scale of adjustment red 10 units(the other more 100deleny), after adjusting the image became normal, but still turnedoff in standby incorporating image in just 30 seconds to appear, but the red color is notlost. If you disconnect from the network and a minute later to include all repeated to-gether with the loss of the red color.
CURE: The fault was on-chip DC-DC converter (U506) instead of 5V which he had togive, it output 11,5 V. The most interesting thing that the unit did not suffer after re-placing all normal.
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HITACHI C20-LC880SNT
FAULT : Trouble-C warming from 5 to 20 minutes (cold) a horizontal bar moves verti-cally then another and another, 10 seconds through out completely disappears, theproblem occurs only with a tuner, AV on all normal.Cure: The culprit turned out to be quartz (14.318 MHz) of the commutatedchipTVP5146PFP.
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Plasma panel Samsung PS-42E7SSnow on the screen with spots on providing participants Ghosting color shadowProblem resolved by replacing Y-MAIN , Y-SCAN Boards.
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SONY KDF-E42A11E Composition K4D263238G-VC36TMemory of the video decoder SDA5550 M TTX CXA2069Q S2-Compatible 7-Input 3-Output Audio / Video Switch B11 MSP3411G Multi standard Sound Processor FamilyWith Virtual Dolby Surround NEC UPD61120 CPU TC58DVM72A Flash D1216AATA-6B-E ELPIDA MEMORY CXD1975 largest percent under the radiator and unprinted Plus abunch of small things The faulted memory of the video K4D263238G-
VC36T
SONY BRAVIAAbsolutely identical symptoms manifestations malfunction. The problem was resolvedResoldring scalar (the largest m / BE diagram on the board under the radiator). Thetruth indefinitely TV to turn on and was seen picture, conjures up thoughts about theproblems with the Scalar I.c.
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Sony Bravia Resoldring scalar
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Use pin hole hot air gun with pasting glue, In Urdu I.C ko terka lagaow
KDL46X3500 UNEVEN BACKLIGHTING
Defect: lights in the center of the raster for defects in KDL46X3500.TV have a newtype of LCD (from SAMSUNG) with four blocks bulbs 16pcs. In each block, two invertermaster slave, 4 powerful high transformer, two in each inverter. BLK and WHT con-fused with the plant in the second KDL52H Driver IC IC6701 on both outputs gavecommon mode.
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TOSHIBA 37WL65R Panel AUO T370XW01
Fault: Dark uneven overexposed image inverter operates on the verge of shut-
down. Open SMD resistor 1k in one of the channels in the feedback R111.
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LCD SAMSUNG SYNC MASTER MODEL: 932 MP A PANEL: MODEL
NO: M190EN04 V.7Made in China (S1) on the control board: MODEL: RT19FS (US) No REV: MP1.1 proces-sors: IC400 GENESIS gm1501H LF- ic701 MICRONAS VCT 49XYF C7
Fault: Planted voltage 2.5 volts, Jumper the S486. LF 25 = 2.5V. In principle, a simpleDefect, and calculated quickly, works again fine.
Samsung Sync master
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PHILIPS LC4.1EAB DISPLAYS ON QUANTA 26PF3320
Fault: No picture and sometimes colored vertical thin black horizontal stripes acrossthe screen (see photo). problem is caused by the fact that the LCD panel productionQD26HL02 QUANTA DISPLAYS INC used signaling and power supply from MAINBOARD ( on the main board on which connector LVDS) for GATE BOARD (board on theside of the panel) on wirings on the glass.
Solution: Allowed to exclude the flat cable between the boards, but if the signal trans-mission paths acceptable resistance to power is too high and the GATE BOARD is de-energized.
LCD LG RZ-27LZ55
Composition: Interest VCT49X3F, scalar GM5221, SOCKET (CIRC) IC900CCSD-32T-SM, IC800 PERIPHERALS SM5301BS, IC 600 PERIPHERAL SMST9883C-LF, IC500 MICRO CONTROLLER FLI2300BD, RAM M12L64322A,IC200 LINEAR LA7222.
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Fault: The screen is horizontally moved on top of the bottom band image isnot visible but the graphics is visible clearly, if a signal DVI input on the pic-ture shows. Other AV inputs also strip.
Solution::: Replace DRAM M12L64322A-6T solved the problem
SAMSUNG LE32S81.Composition: Main CPU - MT8202, FBE -SDP64, PanelAUO T315XW02.
Fault: Slowly illuminates the image, turning into two part .Pre diagnostics detectmissing voltage VGH1 (25V) DC / DC converter T-CON.
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Solution: Replacement diode assembly D502 in DC / DC converter T-CON
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PHILIPS26PF9946/12, CHASSIS AND LC4.2E PHILIPS 26PF9320 in the
same chassis. Panel LC260W01 (LPL). All in: *
Problem: one of the addresses with a defective hand there is no signal on the controlpoint SSP1 (Source Scanning Right Start Signal)
Cure: On the operating side, from the point of SSP1, wire catches on with the samename to be defective.
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HITACHI 37LD9000TA NA TV scalars on Genesis FLI8532-LF
Problem: Stripes, ghost pictures. Customer says with warming up about an hour torestore the picture. Been with me this was not In this paper, 6 months, the defect be-came apparent at 4 months. Capacitors tested voltage signed on board (5v, 12v, 24v,3.3v, 1.8v) are also normal, normal pulsation. Flex on the matrix tested. Composition-
Genesis FLI8532-LF Scalar MSP4458 Multi standard Sound Processor Compatible
CXA2069Q S2-7-Input 3-Output Audio / Video Switch HDMI SIL9011CLU bit (50degrees basked scalar). When focus forum chain VS warmed scalar using alcohol-rosinflux. Warming because: 1min and 2min 280grad 360grad soldering station withoutnozzle top. From a distance of 25-30mm After warming image back to normal Opera-tion.
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SAMSUNG LED TV LE42D500
FFFaaauuulllttt::: Noise bar on picture of every input.CCCuuurrreee::: The defects in the image that are associated with malfunction RAM, ReplaceRam and set works fine.
TV LG 42PX3RVA-ZC MF-056A chassis, Panel PDP42V706A2
PSU J006A
PPPrrrooobbbllleeemmm::: Plasma with green stripes in the form of image noise,Structure: Y SUS 42V7 P / n 6870QYE011D Z SUS 42V7 P / n 6870QZE017DCTRL 42V7 P / n 6870QCE020C Stresses on ZSUS + VS187.9V, VA 64.9V, +5.4 V YSUS VS187.9V, +5.4 V, IC 19 DC / DC 15,3 V PSU voltage on all present and normal: 3,4 V, 6V,12V,
CCCUUURRREEE::: Faulted SDRAM (IC901, IC902 K4D261638F-LC50 ) at K4D261638E-TC40
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PANEL V400H1-L12 REV1 TCON V400H1 PETAL
NT39530H-C5208A Driver 1138 AA-A521AT
Common Problem of this types of panel you should Test and jumpthese connection as we shows.
This is a Pin data of above Panel main connection shows in picture, Connection soldwith thin wires to Pads to T-con board STVR – 142 pin; OE1 – 141pin; CKV – 150pin;VGL – 5pin; OE2 – 142pin; STV – 150pin; and VGH – 8pin.
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See this circuit board of T-Con board for theses connection.
T-con board STVR – 142 pin; OE1 – 141pin; CKV – 150pin; VGL – 5pin; OE2 –
142pin; STV – 150pin; and VGH – 8pin.
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Panel M260TWR1Open fields STV signal change on the side of the driver, if the finger could move on theside, the picture may appear on leads, use jumper wire for connection VGL, VGH, 3.3v
V315B3-L04 Panel Connection
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PANEL: LTA320WT-L05T-CON: 320WTC2LV3.7 17MV22-2 CHASSIS. Slow Motion, Picture, Blur Image.
Use Jumper Wire for Von connection
PPPaaannneeelll VVV222666000BBB111 Major Problem of this panel you should use jumper wire.Should Have DRL1, 3.3V and side pad should have GRL2 3.3V. D-drain, G-gate, respec-tively, DRL is the power of column drivers and GRL lowercase .
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PANEL LTF400HA03 APPENDIX I33VVBC-X01. MAJOR OPEN
CONNECTION FOUND.
HERE WE SHOW YOU STV, CPV1, CPV2, VON, VOFF, R1-1,R1-2
CONNECT THESE WIRES WITH SOFT HANDS.
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LCD TV SONY KDL-32EX402 PANEL LTY320HM01 A02Came to malfunction doubles the image vertically and "banding" in the upper part ofthe image.
Fault panel. Solution - Reduce stress VOFFE from-12V to-19V. In the T-con in-stalled DC-DC MAX1722, change resistor RD18 leg FB3 12kOm with nominal 7.5 ohms.VOFFE voltage drops to-19V, double vision disappears, only the top of the image thereare hardly identify blackout strips. But the client is satisfying with the result.
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SAMSUNG they USE PANEL LTA320WT-L05. Lack of supply Von-24v on theside loop Pad, Von panel use jumper and planted gum on trail disappears. Photos areattached.
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PANEL T370XW02 V.5 TCON T370XW02 V.5 CB
PROBLEM: SOME TIMES PICTURE COMES VERY GOOD AND SOME TIME WENTWHITE.
RESISTANCE FOUND ON THESE CONNECTION,VGL VGHK YCLK YOE1 YDIO …USE JUMPER
WIRES FROM MAIN PCB TO PAD FIX THE PROBLEM.
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PANEL LTY460HB08 460HBSR2LV1.1 -RIGHT, 460HBSL2LV1.1 -LEFTPads on one side CS19C , with other 5090-A .Problem occurs immediately after the blackout and retardation with tails on the rightside. After 10 minutes of normal picture. Identified chaotic changes resistance from 150ohms to nothing STV, CPV1, CPV2, VCOMG2 VCOMG3 and between the right and theupper plate side driver. Stir loop right fielder vertical driver helps restore . Reconnectshelped restore the picture.
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See all of these connection and use thin wire and connect at PCB points.
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PANEL LTA460HT-L01 .TRIMS: 460HTSL2LV0.2 - LEFT AND
460HTSR2LV0.
Panel LTY460HT-LH1
SL725091 left Pad SL725232 right Pad Trims: 460HTSL2LV0.3 - left and
460HTSR2LV0.3 - right. Petal SL765085 - left, SL755496 -rightTelevision were defective floating with tails pictures. Dropouts VON stripsfrom the upper side driver on both sides. Reconnects normalized image.Here is pictures SL725091 and SL725232 ,SL765085 and SL755496 -identical. Just noticed that different
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LTA320WT-L15 , STRAP 320WTSL4LV0.0 , PETAL S6CG215-
51B
TOSHIBA, SHARP, PANEL LC420WUD (SB) (M2) .LC420WUN SBA1-731-LEFT, P / N
6870S-0642D - LEFT STRAP.LC420WUN SBA1-731-RIGHT, P / N 6870S-0643D
Test Case Read Carefully.
LC420WUD-SBM2 T-con. Television with 10cm band image at the top of the screen.Also there's the band a few pixels on the right side between the 3rd and 4th from thetop side pads . Gradually fills white with clearly visible transitions between drivers. Itwas found on the sagging VGH_M T-con 10.7v to 24.7v with VGH. Strongly heated thirdtop right side strap when tilting right from T-con VGH_M = 23.5v, VGH = 27.1v and thepicture appears on the left, but with greenish artifacts and without contrast. All connec-tions between the slats and ears in order conditionally, because some go up to 200ohms but not jump but presumably GSP_REV - 3.2kOm or wrongly location. Honestlydecision yet, but since have information on the panel decided to immediately post inthis section. Burn not see any sense, because it is not clear between what, and make ahole in the tail easily. While I tend to remove the side lobes. Finally got around to thepanel. It was revealed VGH in the right half. When disconnecting appeared full picturebut with shading and tails on the right side. VGH was clipped on the driver who basked(third right top). Appeared normal in the upper half of the picture and brake in right.Were then removed the right driver. The left side does not pull the whole screen, which
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can be seen on a white field on color and dynamic picture all perfect.
Connect these points with thin wires.
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Panel LC420W02 (SL) (L1) T-con LC420W02 - SLA 1 Petal
HM10G005M - C1L Driver LL667677 .
CAUTION: Next topic in an adjustment to STV_R, read before applying more V260B1 now L12 -
gray stripes and spots every different area on the screen, and with warming picture .
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Panel P-MOD 46M1T (UC)Left plank 46TO2-S05 or T460HW02 V4 XL from AUORight strap 46TO2-S04 or T460HW02 V4 XR from AUOPetal NOVATEK NT39329H-C02A5A driver 914E2E18AA
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HT215F01-100
HT215F01 100X0.0 -Tcon110CCUKR4-00D - driver FCY0C 8656- petal-Turns with a white spot, which gradually increased and transformed into a blue screenor a weak, horizontal, solid, thin strips, then partially in vertical, sometimes , Open MLG,there were a few such cases have been on the petal of the penny is no, we have to care-fully soldered to the track. When induced VOFF1/VOFF2/VOFF3 lines recommended byT-CON temporarily remove R238 and R237, to avoid confusion.loop Contacts points: \ 1 and 2 - SV \6 -OE1 \ 7 -SPV \ 8 -STV \ 11 -VOFF3 \ 12 -VOFF2\ 13 -VOFF1 \ 14 -MLG \ 15 -VCOM \
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Philips 32PF3320/10 main LC4.5E AA QD32HL02 REV: 01
Panel CLAA216WA01Take measurements on a dead panel, if anyone has a working well be compared to thedriver side. Understated VGH - 13V must - 20.7 V with understatement VGH no picture,screen dark. PWM dead - AAT1177, the chain of VGH AAT1177 Up zero jumper fromthe circuit energized VGH VDDG - 24V brought together a chain of series-connected1N4148 + R (300Om) resting on the zener diode 20V.
Panel V315B5 - L06 Rev.C1
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Panel LC320WUE-SAA1 stands in 32PFL5604, Missing the lower half of theimage, with the heating pours milk. Underestimated VGH to 1V on the two side addressdriver, threw jumper panel board. More detailed measurements of stay was not possi-ble, resting visiting relatives, suitcase accidentally left in the trunk before you go tothem second such panel this month with similar defects.
Matrix (panel) - LTA320AB02 T-CON - 320AB02CP2LV0.3very popular defect "Running Picture"There are two drivers in positions ICS1 ICS2 and from which signals STVP1, CKVB1,CKV1 and STVP2, CKVB2, CKV2 go to the row driver say so drayverov1 group andgroup 2 drivers (as it is there precisely arranged known only to developers but let's justsay that one group of duplicates another group) and so one group of drivers has a bro-ken case that spoils us a picture, in my case it group1 controlled corresponding signalswith index 1 through driver ICS1. Evaluate to what group accidents Register discon-necting power turns with Von ICS1 And ICS2, and landing legs 1 chips to the bodywhere no longer run after shots off Von, then that driver controls the group with bro-ken register. might seem that removing power from Von (+28 v) with the desired driv-er problem is solved, but it is not so, but to become a great picture but eventually5minutes if the picture has static objects such as a channel logo (pictured logo and Ros-siya24 NTV), the artifacts appear as intermittent bands cm photos. But it is also solvedsimply be removed from the board and apply for a driver signals STVP, CKVB, CKVpower Voff (-12v) 8 foot driver chip. And in general, is all almost perfect picture! , Onlyfifteen minutes on NTV was seen faintly artifact, almost discernible unless you knowwhere to look not possible, it is possible to win by increasing negative voltage Voff to-16 --- 17volt. Voff I installed 16., 3v, adjustment Voff I realized zener 9,1 v included asshown in the picture (between the emitter and collector of Q2, to the emitter cathode,anode collector). This method to combat "running shots" can be applied to other matri-
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ces with other T-con
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LTA320WT-LF2 DAEWOO DLP-32C1
DAEWOO DLP-32C1 LCD 32 "TV. LTA320WT-LF2, fee T-CON: 320WSC4L V5.8.When the LED blinks red 4 times. Image on a static picture is normal, only slightlydimmed on dynamic - residual plumes from moving objects. C OSD same thing happens.Supply voltage OK: 5V, 12V, 24V, 30V. bit gives a lift Supply matrix (4,8 V), I think theproblem in it. Stresses on board T-CON has: VON - 22,5 V; VIN - 4,8 V; COM - 15V; VOFF- minus 7V, VDD - 2,5 V; STV - impulses too. top two trims - almost symmetrical: theright and left 320WTSR4L V0.0 320WTSL4L V.0. Stresses on pines reach everywhere .Similar problem was solved with VON wire strip on the upper driver third bottom pinreset on the advice (wire MGTF ).
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Panel Samsung LTA320W2-L13, fee T-CON: 320W2C4LV6.4Composition board T-CON: Comptroller LRX4222T3, RAM-K4D263238F,EEPROM-24S64WP, gamma correction-EL5420CRZ. Stresses in points De-stroy T-CON board all have: Von _24v; Vcom-_7v, AVDD_15 v, Voff - minus7v, TD_3.3v, VIN _5v; VDD_2, 5v.
FAULT: On the motionless out picture, as it were a little blurred, slowlyfades plume pixels after moving obektami.OSD graphics norm when such in-creases the volume and decreases when the loop is large.Brightness, contr., the sound is normal.There are similar themes where glass breakage Von- treated wire MGTFtype. T-CON board is two loops on the left and on the right scarves glasspanels. glass on two boards 320W2SL4LV2.1 (LEFT-RIGHT-left right).Flex - glass call only the left scarf, no break. Checkpoint Von (24 volts) on theleft tab.
........... . . . . .....................................
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V260B1-L11 and V260B1-L12bring more to the discussion information
this issue - V260B1-L04 REV.C2 Covered:
1. Identity data pads
2. Correctness of the information provided in the image signal STV and STV_R .
3. Defining and Identifying Facilities lowercase drivers (petals) to the type of
panel (if there are differences between them). Here note - T-CON located on a
separate board and with its location on the plate glass panel.
4. Amendments and additions.For objectivity give their information for consideration on this issue. producing recon-stituted panel V260B1-L11 Rev.C1 T-CON Bracket V260B1-XC11 (Philips26PFL5403S/60 TCM2.0E LA) discovered in part difference signal STV and STV_R . Da-ta breakpoints on the petal is not identical . . waveform are identical but are out ofphase . In my case was open signal STV . When duplicating conductor STV_R , as hasbeen suggested (two equivalent top and bottom lobe) in the photo (quote already cor-rected version on STV ) - - from the upper lobe of the control point (near to the bar) tothe signal STV_R Bracket - operation panel is restored, but only for a while , until youhave a primary conductor breakage in glass (or contact on cable). With his spontaneousrecovery in the operation after the closure of duplication between the signals obtainedSTV and STV_R panel and again becomes defective. In my case (almost immediately re-vealed when running) observed the effect of "running footage." A colleague came re-peated two weeks later - "the cold is no ISO first 15 minutes." I believe that the manifes-tation of the defect can be varied depending on the degree of resistance to breakageand recombination it ... I enclose a photo correct location signal STV on the petal panelV260B1-L11 Rev.C1 and planks overhead T-CON V260B1-XC11 Petal - CBH1 / 8658-B(the inscriptions top / bottom respectively lobe location relative to the panel) Driver -821SSU371-00B (Philips 26PFL5403S/60 TCM2.0E LA) signal STV_R and its location(top photo) on the petal driver remains unchanged and the same name, including andon the bar. Changes and corrections to apply only to the lower (erroneously calledSTV_R ) on STV and added point (s) of its origin with straps. Displaying two points sig-nal STV , which comes with a signal to the loop in the panel, but soldered to them isproblematic. Therefore, you can traverse the backup conductor further to the check-point, as in the photo - is under the third vertical train drivers from the side of linedrivers. At the bottom (or right) photo reference point is located in the third verticaldriver to the center panel from the side of line. Have an opinion on personal experiencethat these messages occur in direct relation to the above error -
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Panel LTA320WT-LF2 VON (22.7V) Missing
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Philips 32pf5321/12 faulty RAM K4D263238.
Philips 32PF3320/10Main LC4.5E AA QD32HL02 REV: 01 and T-con V32BC3Color distortion in the form of dirty greenish-brown shades (visible on the face of hisgrandfather) and lack of semitones (seen on the shirt of his grandfather.)The module T-con voltage VCOM3 instead it was 6,5 V 12V - broken output circuitsAS34-G. The second picture after troubleshooting. AS34-G gamma corrector and defectquite often worth and Samsung.
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T260XW05 V0. T-con built on the top plate.Classic problem - periodically lost control signals driver - side screen is dark , thenslowly appear colored vertical stripes . Reach the ear proved difficult - the glass is gluedto the plastic frame. Turn down seemed dangerous - some coppers very close to theglass. Risk did not turned out that bad contact - at the extreme conclusions , where loopis attached to the plate. Screw length pressed iron plate with gasket . Three days nor-mal flight . Thought for the future: if you still have to climb into the ear , then it is bestto remove the glass together with the frame , and then break out the relevant section ofwire cutters Worked all night. Solder - did not help. Hence, in the glass. Tore off theglass from the frame it turned out all the same STV. Throw wire.
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Panasonic TX-R32LE8.Negative. The problem is T-con, namely the ill-fated gamma corrector. Although it wasmuch more prosaic. When measuring out voltages the control points: VREFU_L - 8,8 V,VREFL_L - 0,15 V, VREFL_H - 6,1 V (all voltages removed after repair, so relative). Whencontinuity strapping Shorty MAX9590 circuit to ground - 25 pin (C360). Banality - sol-der wicking ..
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Chinese fault" ALUG model: two characters H4280Composition: CPU aka Scalar MSD106CL-LF-Z1 flesh 25H32VS1G, 3 pcs EEPROM24S02, TDA9886TS, TPA3124D2, HCF4052, and some even X50V330 reason wasdamaged firmware external Flash 25H32VS1G, after flashing with the donor operationwas restored.
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SAMSUNG PS42C91HX_NWTAfter replacing CX833, CX804, CX810, SX813, CX814, (swollen) in low power +5,3 V and+12 V power supply P-SMPS BN44-00161A, had to change and BN96-04596A P-LOGICMAIN. Defect P-LOGIC on the photo.
:
SHARP LC-32P55EMainKD603WE01, VCT6973G B3, LCD-module LK315P3LZ10Z.green border, as in the image sloping noise bands, with high brightness in light areas inthe image goes negative.
Defect in the Main-Unit, part of the increase in resistance to 45th choke L2304
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(FA071WJ) 131pin VCT6973G signal CLKIN +
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SAMSUNG LA46M81B. Panel LTA460HB05. T-con
404652FHDSC4L 0.0Left part of the frame is repeated vertically, right-norm. Left out slightly blurry. Thatbroke off to find out there was no time. Hurried customers. So just cleared out the loopon the main board and soldered properly. Every restored. That he managed to trace-spread. By the way, was not in place on the board 24S64 Tcon. Set and poured firmwarefrom Tcon panel LTY320HA03-01.
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Matrix AUO T420XW01 V0 (LCD TV Sharp LC-42PD2RU)
Petal - NOVATEK NT39329H-C0258A
Defects occur as a periodic appearance of the left vertical braking murky background(usually on a cold), happened when you click on the top corner, the picture is restored.On the face of an explicit address blade side loop, but rather the power going through iton the driver side.Tried to catch what supply is lost, but was worn out, only slightly tronesh top dresswith a train, the picture is normalized after recovery images can be switched both dayand two normal.Duplicated once both supply VGH and VGL, passing something.conclusions on a connector J3:8 - VGH10 - VGL12 - U_D aka V3D315 - YDIOU (human)17 - YCLK (lowercase)21 - YDE1 (pictured food -5,9 v with a question, do not call with VGL) PS A year haspassed since the date of repair As a result, all duplicated synchronic: YDIOU, YCLK,YDE1. Concludes that it was necessary to duplicate all at once.
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Matrix AUO T420XW01 VC stands 42JG10R-TA T-con T370XW02 VC Ctrl BD
Problem As in the photo, sometimes pause with the transition to the white state, orappear out "influx". Duplicated VGHC and VGL. Normal flight
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Panel LTA320WT-L06 T-CON 320WTC2LV3.7 bracket
320WTS2LV2.6 SAMSUNG (TV BLAUREN COMFORT 32)The image long loops in dynamic objects, the effect of "icing" and "retardation" finearts, when changing a new frame slow disappearance of the previous, OSD - similarly.Static image is normal.Defect: VON bus interruption in the glass.After duplication performance tires VON panel restored.Resistance power and signal conductors in the glass matrix TFT (values ??are roundedto the range of 5-10%) -VON - OPEN!VOFF - 15 OmSTV - 300 OmVCOMG2 - 100 OmVCOMG1 - 150 OmVST1 - (not identified)CPV1 - 300 Om
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CPV2 - 300 OmVDD - xxx OmGND - xxx OmMarking horizontal drivers - 742PPTSFP - A01Markings on the loop (lobe) driver - CS19C and 5090-A
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Panel LC320WUE-SAA1 stands in 32PFL5604,Missing the lower half of the image, with the heating pours milk. Underestimated VGHto 1V on the two side address driver threw jumper panel board. More detailed meas-urements of stay was not possible, resting visiting relatives, suitcase accidentally left inthe trunk before you go to them second such panel this month with similar defects.
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LTA320WT-LF2Image slows and turns white on the side driver is missing - VON (22.7V).
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Model Samsung LE37M87BDX/BWT -Matrix T370HW02 v.2
T-con T370HW02 V0After replacing the blown capacitors, including but distorted colors. Perhaps this char-acteristic picture when such a failure - measurements showed that died AS15-F -smooth top lighting on color raster, no clarification on smooth gray, white and blacksquares. Note the channels and VGMA9 VGMA10.
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In addition to the family of panels CLAA215FA....panel - CLAA215FA04
TCON - 215FA04S-2C Mark drivers - 002IILV0FM-00B - HX8657-B
Defect - greased, the brakes out due to lack of VDDG_FLK on the petal (served with 18 -19 pin. loop)
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PANEL T370HW02 V1 - Driver: NOVATEK NT39329H-C0264A
T260XW04 V.3 Pads RM76180FC-086 driver 06B019CCA1
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Matrix LG LC470WUE (SA) (A1).
Defect appears within half an hour in the right third of the screen.Pictured are already showing football close-up, and right field is not yet disappeared.Also clearly seen when switching channels when screen goes blank, the remnants of agalloping right image.Pads T7C75A1 Do matrix 4 lobe on each side. Photo painted with top drivers, workingfrom the left side. On the right there is no lower petals 3V3, and feeding it the right sideof the screen darkens. If you bind this point to ground via a resistor 200 300Om, the de-fect does not appear. The fault could touch the bottom of the instrument probe point3V3 or heating hairdryer any of the four right drivers. After connecting with the earth,such a manifestation disappeared. It remains unclear what potential db at the lowestpoint in the right 3V3 drivers, same as in the left, or tied to ground?
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Matrix M260TWR1 ,INFOVISION OPTOELEKTRONICS,TV Akai
LTA-26N680HCP.The white screen and with warming up vertical strips. Were in VGL break - 8.6v, VGH19.4v, 3.3v.On an ear of the Piglet only two. It was necessary to solder to paths. I addeda photo of drawing of side pad from my records. To the right of the driver to glass gosome of paths, then the round patch, again the path following more widely to it we sol-der VGH19.4v, to the second wide VGL - 8.6v, to the third wide 3,3v. I hope with such
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explanation it will be more clear.
Matrix LC420WUL SB M2 marking driver (lobe) 943ST65Hinders right half. Open signal OPT_P, control the direction of signal flow through theGSP drivers. For the right half of the matrix OPT_P = "0" for the left OPT_P = "1". Accord-
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ingly, if you look at the ear (right side of the matrix) input signal GSP left out - right.And vice versa (for the left side of the matrix) input signal GSP right way - on the left.
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LTY320W2-L02, strap 320W2SL4LV0.4, petal 8632CS02A
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TTTeeesssttt CCCaaassseee FFFaaauuullltttsss fffooorrr LLLCCCDDD aaannnddd LLLEEEDDD TTTVVVsss...
LLEEDD LLCCDD TTVVss RREEPPAAIIRR CCUURREE
MMMOOODDDEEELLL::: LLLEEE222777TTT555111BBB LLLCCCDDD TTTVVV
SSYYMMPPTTOOMMSS:: DDaarrkk ffrraammee wwiitthh ccoolloorr ssttrriippeess..CCUURREE:: iittss llooookkss lliikkee tthhee uunnssttaabbllee vvoollttaaggee pprroobblleemm.. CChheecckk aanndd rreeppllaaccee uupp44 ((11111177ddgg)) oonntt--ccoonn bbooaarrdd.
MMMOOODDDEEELLL::: LLLEEE333222RRR777333BBBDDD LLLCCCDDD TTTVVV
SYMPTOMS: No picture and no OSD menu. Backlight ok.CCUURREE:: RReeffllooww LLVVDDSS ssoocckkeett oonn ssccrreeeenn ddrriivveerr PPCCBB aanndd mmaaiinn bbooaarrdd PPCCBB..
MMMOOODDDEEELLL::: LLLEEE333222RRR777444BBBDDD LLLCCCDDD TTTVVV
SYMPTOMS: TV dead. Pulsating noise from PSU and LED light flashes.CCUURREE:: CChheecckk sshhoottttkkyy ddiiooddee DDMM885544 ((MMBBRRFF11554455CCTT)) iinn PPSSUU ffoorr sshhoorrtt cciirrccuuiitt..
MMMOOOEEELLL::: LLLNNN444000AAA666555000AAA111FFFXXXZZZAAA,,,LLLNNN444666AAA666555000AAA111FFFXXXZZZAAA,,,LLLNNN444000AAA777555000RRR111FFFXXXZZZCCC,,,LLLNNN444666AAA777555000RRR111FFFXXXZZZ
AAA,,,LLLNNN444000AAA777555000RRR111FFFXXXZZZAAA LLLCCCDDD TTTVVV
SYMPTOMS: Unit tries to start with melody but cycles off and back onCCUURREE:: IIff tthhee uunniitt ttrriieess ttoo ttuurrnn oonn aanndd mmaakkeess tthhee ssttaarrttuupp mmeellooddyy bbuutt tthheenn iimmmmeeddiiaatteellyysshhuuttss ooffff aanndd ssttaarrttss aaggaaiinn,, uunnpplluugg tthhee llvvddss ccaabbllee aanndd aappppllyy ppoowweerr aaggaaiinn.. IIff tthhee sseett ssttaayyssoonn,, rreeppllaacceetthhee tt--ccoonn bbooaarrdd..
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MMMOOODDDEEELLL::: LLLNNNTTT444666666555FFFXXX///XXXAAAAAA LLLCCCDDD TTTVVV
SSYYMMPPTTOOMMSS:: LLoosstt bbrriigghhttnneessss wwhheenn yyoouu rreeppllaacceedd mmaaiinn ppccbb..CCUURREE:: BBeeccaauussee mmaaiinn ppccbb bbnn9944--0011119999ee iiss ddeessiiggnneedd ttoo wwoorrkk wwiitthh bbootthh mmooddeellssllnntt44666655ffxx//xxaaaa aanndd llnntt44666611ffxx//xxaaaa wwhheenn yyoouu rreeppllaacceedd tthhee bbooaarrdd iiss ppoossssiibbllee ttoo lloosstt tthheebbrriigghhttnneessss.. ggoo iinn sseerrvviiccee mmooddee aanndd ttuurrnn vvaalluuee llvvddss bbyyttee ffrroomm 88 ttoo 1100..
MMMOOODDDEEELLL::: LLLNNNSSS444000555111DDDXXX///XXXAAAAAA LLLCCCDDD TTTVVV
SYMPTOMS: Dead backlight flashes on then offCCUURREE:: UUnniitt wwoouulldd ffllaasshh oonn tthheenn ooffff aanndd aauuddiioo wwoouulldd wwoorrkk.. YYoouu ccoouulldd sseeee vviiddeeoo wwiitthh aaffllaasshhlliigghhtt.. SSoommeettiimmeess uunniitt wwoouulldd ssttaayy oonn aanndd rruunn iiff yyoouu ccyycclleedd oonn aanndd ooffff mmaannyy ttiimmeess..FFoouunndd bbaadd ssoollddeerr ccoonnnneeccttiioonn oonn iipp bbooaarrdd TTii880011 oonn pprriimmaarryy ssiiddee.. RReeoorrddeerreedd aanndd ccoorr--rreecctteedd pprroobblleemm..
MMMOOODDDEEELLL:::
LLLNNN444666AAA555444000PPP222FFFXXXZZZAAA,,,LLLNNN444666AAA888555000SSS111FFFXXXZZZAAA,,,LLLNNN444666AAA666333000MMM111FFFXXXZZZAAA,,,LLLNNN444666AAA555888000PPP666FFFXXXZZZAAA,,,LLLNNN555222
AAA555333000PPP111FFFXXXZZZAAA,,,LLLNNN555222AAA777555000RRR111FFFXXXZZZAAA...
SSYYMMPPTTOOMMSS:: UUnniitt ccyycclleess oonn//ooffff dduurriinngg ssttaarrttuupp..CCUURREE:: iiff tthhee uunniitt ttrriieess ttoo ttuurrnn oonn bbuutt bbeeggiinnss ttoo ccyyccllee oonn aanndd ooffff bbeeffoorree aannyy vviiddeeoo iiss ddiiss--ppllaayyeedd aanndd aallll ooff tthhee SSMMPPSS vvoollttaaggeess aarree ggoooodd,, ddiissccoonnnneecctt tthhee LLVVDDSS ccaabbllee aatt tthhee tt--ccoonnbbooaarrdd.. IIff tthhee sseett ssttaarrttss aanndd tthhee bbaacckklliigghhttss ccoommee oonn,, rreeppllaaccee tthhee tt--ccoonn bbooaarrdd.. IIff tthhee sseettddooeess nnoott ssttaarrtt,, ddiissccoonnnneecctt tthhee LLVVDDSS ccaabbllee aatt tthhee mmaaiinn bbooaarrdd.. IIff tthhee sseett ssttaarrttss,, rreeppllaaccee tthheeLLVVDDSS ccaabbllee.. IIff tthhee sseett ssttiillll ddooeess nnoott ssttaarrttuupp,, rreeppllaaccee tthhee mmaaiinn bbooaarrdd..
MMMOOODDDEEELLL::: LLLNNNTTT333222555333HHHXXX///XXXAAAAAA LLLCCCDDD TTTVVV
SSYYMMPPTTOOMMSS:: AAfftteerr aa ffeeww mmiinnuutteess wwhheenn TTVV wwaarrmmss--uupp ppiiccttuurree bbeeccoommeess ddiissttoorrtteedd..CCUURREE:: 1100--1155 mmiinnuutteess aafftteerr yyoouu ttuurrnneedd oonn tthhee uunniitt ppaanneell wwaarrmmss--uupp aanndd ppiiccttuurree bbee--ccoommeess ddiissttoorrtteedd,, IIff yyoouu jjuusstt ppuusshh tthhee TTVV’’ss ffrraammee ppiiccttuurree bbeeccoommeess eevveenn mmoorree ddiissttoorrtteedd,,OOnn tthhee bbaacckk ooff tthhee ppaanneell tthhee ccoonnttrrooll ii..cc aarreeaa iiss vveerryy hhoott.. RReeppllaaccee tthhee ppaanneell ttoo ffiixx tthheepprroobblleemm..
MMMOOOEEELLL::: LLLNNN333222AAA444555000CCC111DDDXXXZZZAAA,,,LLLNNN333222AAA444555000CCC111HHHXXXZZZAAA,,,LLLNNN333222AAA444555000CCC333HHHXXXZZZAAA,,,LLLNNN333222AAA333333000JJJ111DDDXXXZZZ
AAA,,,LLLNNN333222AAA333333000JJJ111NNNXXXZZZAAA LLLCCCDDD...
SSYYMMPPTTOOMMSS:: VViiddeeoo wwiillll iinntteerrmmiitttteennttllyy ttuurrnn mmoossttllyy wwhhiittee.. WWhhiittee ddiissppllaayy wwiitthh aa
ffaaiinntt iimmaaggee ooff oossdd aanndd vviiddeeoo iinn tthhee bbaacckkggrroouunndd..VViiddeeoo wwiillll iinntteerrmmiitttteennttllyy ttuurrnn mmoossttllyy wwhhiittee wwiitthh tthhee oossdd bbaarreellyy vviissiibbllee iinn tthhee bbaacckk--ggrroouunndd.. EEvveenn aa bbllaacckk iimmaaggee oorr wwhheenn tthhee ppaanneell sshhoouulldd nnoott bbee sshhoowwiinngg aannyy vviiddeeoo,, iitt iisswwhhiittee’’ss ffoouunndd tthhaatt oonnee ooff tthhee ssuubb--bbooaarrddss iinnssiiddee tthhee ppaanneell,, tthhee bbooaarrddss tthhaatt tthhee rriibbbboonnccaabbllee ffrroomm tthhee tt--ccoonn ccoonnnneecctt ttoo,, aarree nnoott sseeaatteedd pprrooppeerrllyy aanndd tthhee llaarrggeerr ssmmdd ccaappaacciittoorrssoonn tthhee bbooaarrdd aarree iinntteerrmmiitttteennttllyy mmaakkiinngg ccoonnttaacctt wwiitthh tthhee mmeettaall ffrraammee ooff tthhee sseett,, eeffffeecc--ttiivveellyy ccrreeaattiinngg aa sshhoorrtt ttoo ggrroouunndd.. TThhiiss iiss oonnee ooff tthhee ppaanneellss tthhaatt iiss mmoouunntteedd uuppssiiddee ddoowwnn,,ssoo tthhee ssttaanndd mmoouunnttss jjuusstt bbeellooww aanndd bbeehhiinndd tthhee ppaanneell ffrraammee.. AAnnyy sslliigghhtt pprreessssuurree ffrroommtthhee ssttaanndd ccaann ccaauussee tthhee ffrraammee ttoo mmaakkee ccoonnttaacctt.. IInn mmaannyy ccaasseess,, tthhee ttvv ccaann bbee sslliigghhttllyyfflleexxeedd ttoo mmaakkee tthhiiss iissssuuee ooccccuurr..
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CCUURREE:: AAddddiinngg ffeelltt ttoo tthhee aaffffeecctteedd aarreeaa wwiillll ssoollvvee tthhee iissssuuee..
MMMOOOEEELLL::: LLLNNNTTT444000666555FFFXXX///XXXAAAAAA,,,
LLLNNNTTT444666666555FFFXXX///XXXAAAAAA,,,LLLNNNTTT555222666555FFFXXX///XXXAAAAAA,,,LLLNNNTTT444000666111FFFXXX///XXXAAAAAA,,,LLLNNNTTT444666666111FFFXXX///XXXAAAAAA
SSYYMMPPTTOOMMSS:: BBlluuee ssccrreeeenn wwiitthhoouutt ssiiggnnaall,, wwiitthh ssiiggnnaall --bblluuee ssccrreeeenn wwiitthh ffllaasshhiinngg
wwhhiittee sshhoorrtt hhoorriizzoonnttaall lliinneessCCUURREE:: RReeppllaaccee LLVVDDSS ccaabbllee,, cchheecckk iiff tthhee ccaabbllee nnoott ssttrraanngglleedd bbyy tthhee mmeettaall ccoovveerr aanndd llooooss--eenn uupp tthhee ssccrreewwss ooff tthhee ccoovveerr..
SSSaaammmsssuuunnnggg LLLCCCDDD LLLEEE111999DDD444555000GGG111
FFaauulltt:: PPiiccttuurreess iiss NNeeggaattiivvee ttyyppeeCCuurree:: DDuuee ttoo VVccoomm VVoollttaaggeess nnoott ccoorrrreecctt aatt ppooiinntt II ffoouunndd RRAA2288==3399kk aatt ppaanneell cciirrccuuiitt..
SSSooonnnyyy BBBrrraaavvviiiaaa
FFaauulltt:: NNeeggaattiivvee PPiiccttuurree aanndd aallssoo OOSSDD iiss NNeeggaattiivvee..
CCuurree:: FFaauulltt aatt TT--ccoonn BBooaarrdd aanndd ffoouunndd FFaauullttyy SSMMDD II..CC AASS1155--FF
SSSaaammmsssuuunnnggg LLLEEE333222AAA555555000
FFaauulltt:: SSeett ddeeaadd aanndd ffoouunndd bbuurrnntt ppaarrttss iinn ppoowweerr ssuuppppllyy BBooaarrdd BBNN4444--0000220099AACCuurree:: RR880066==1100 OOhhmm FFoouunndd ooppeenn,, RRBB880055 ((00 oohhmmss)) ooppeenn,, QQbb880022 DD11669911 ffoouunndd SShhoorrtt CCiirr--ccuuiitt aanndd MMCC3333006677PP aallssoo ffaauullttyy.. TToo tteesstt ppoowweerr ssuuppppllyy bbooaarrdd CCNN880022::
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SSSOOONNNYYY LLLCCCDDD KKKDDDLLL---444000PPP222555333000 SSSEEE111 aaannnddd KKKDDDLLL---444000UUU222000000000 SSSEEE111
FFaauulltt:: BBLLIINNKK 44 TTIIMMEESS AANNDD SSTTOOPP TTHHAANN AAGGAAIINN BBLLIINNKK 44 TTIIMMEESS AANNDD RREEPPEEAATT TTHHEE
SSEEQQUUAANNCCEECCUURREE:: TThhee pprroobblleemm iinn IInnvveerrtteerr BBooaarrdd,, lliikkee ooppeenn ffuussee aanndd sshhoorrtt cciirrccuuiitt FFEETT,, aallssoo cchheecckkffuussee nneeaarr LLVVDDSS ccoonnnneeccttoorr..
PPPhhhiiillliiipppsss 444222FFFLLL555444000444HHH///111222 CCChhhaaassssssiiisss QQQ555555222 111EEE LLLAAA
FFaauulltt:: FFllaasshh LLEEDD 33 TTiimmeess--SSttoopp--33 ttiimmeess aanndd NNoo ppoowweerr..CCuurree:: EErrrroorr CCooddee 33 DDiiooddee DD221100==SSBB33220000 iinn PPoowweerr ssuuppppllyy aarree FFaauullttyy
LLLGGG 333222LLLWWW444555000000---ZZZBBB CCChhhaaassssssiiisss LLLDDD000111UUU
FFaauulltt:: PPoowweerr ssuuppppllyy PPrrootteeccttiioonnCCuurree:: ZZDD550022 ZZeenneerr SShhoorrtt CCiirrccuuiitt aanndd ooppeenn cciirrccuuiitt RR550088==00..66 OOhhmmss
MMMaaatttrrriiixxx LLLTTTFFF333222000AAAPPP000666SSSaaammmsssuuunnnggg LLLEEE333222BBB333555000FFF111WWW nnnooottt tttuuurrrnnn bbbllliiinnnkkksss 444 tttiiimmmeeesss
LLCCDD mmooddeell SSUURRVVIIVVAALL DDVVBB ccooddee NNOO:: BBNN4411--0011220077BB
MMuummmmyy:: BBNN9944--0022777799FF iinnvveerrtteerr mmoodduullee ppoowweerr:: BBNN4444--0000228899AAFFAANN77553300 PPWWMM ppoowweerr PPWWMM IICCEE33BBRR11006655JJFF
PPWWMM iinnvveerrtteerr OOZZ99993388GGNN ttuunneerr DDTTXX--88BB//WW1122BB55SS
CCuurree:: TToosssseedd mmootthheerrbbooaarrdd aallll uupp pprroobblleemm iinn iitt,, II ccaann nnoott ffllaasshh ttoo ffllaasshh,, aarrrraannggeedd
cchheeaappllyy ttoo aannootthheerr MMootthheerr BBooaarrdd..
LED Samsung UE37C6540SW STBY lights and relay clicks
TTVV LLEEDD SSaammssuunngg UUEE3377CC66554400SSWW MMooddeell ccooddee:: UUEE3377CC66554400SSWWXXUUAA
VVeerrssiioonn:: CCNN0011 PPSSUU:: BBNN4444--0000335555BB MMaaiinn:: BBNN4411--0011444444bb
TT--ccoonn:: VV446600hh11--CCHH77 TTuunneerr:: ddtt00ss4400ccvvll008811aa MMaattrriixx:: TT337700FFBBEE11--DDBB
FFaauulltt EEnnrroolllleedd iinn TTVV rreeppaaiirr,, aaccccoorrddiinngg ttoo tthhee cclliieenntt oovveerr tthhee nneettwwoorrkk ccaabbllee iinntteerr--
nneett wwaattcchheedd aa mmoovviiee oovveerr tthhee IInntteerrnneett wwhhiillee wwaattcchhiinngg TTVV sshhuutt ddoowwnn,, lliigghhttss ooffff
mmooddee aanndd cclliicckk tthhee rreellaayy ,,UUnniitt ooppeenneedd,, cchheecckkeedd iinnppuutt LLaann ccaabbllee,, nnoott cclloosseedd,, oonn tthhee
bbaannkkss pprreesseenntt aatt ooppeerraattiioonn 338800 rreellaayy aass tthhee rreellaayy iiss sswwiittcchheedd ooffff aaggaaiinn ffaallllss,, aanndd
ssoo ppeerriiooddiiccaallllyy.. ppoowweerr ttoo llaannee oonnllyy 33 vvoollttss mmaaxxiimmuumm,, aafftteerr tthhee rreellaayy ffaallllss,, aanndd
wwhheenn tthhee rreellaayy bbaacckk ttoo tthhee ssaammee tthhiinngg,, aanndd ssoo ppeerriiooddiiccaallllyy ,,MMaayybbee ssoommeeoonnee eenn--
ccoouunntteerreedd tthhiiss pprroobblleemm..
II lleett yyoouu kknnooww tthhee ccuurree ooff tthhee pprroobblleemm..
CCaauussee ooff FFaaiilluurree wwaass 11AA0066BBJJ ((QQDD880077)) aanndd ddiiooddee SSSSFF33 ((DDDD880077)) aafftteerr rreeppllaacciinngg tthhee
uunniitt sseett wwoorrkkss aaggaaiinn..
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Samsung LE26S81BThe failure of the synchronization is shown only when receiving a signal from the an-tenna, menus and AV signals reproduced without problems.
Cure: The fault on the circuit formation 5V power tuner S152.
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Samsung LE37S81BX / BWT
Fault : Image distortion
Cure: When you install an alternate panel BN07-00446A (CLAA370WA03SC), insteadof the original BN07-00366A (CLAA370WA03S) possible occurrence of this problemwith the image. TV must be attached to flash firmware and after flashing, change thevalue of Spread Spectrum -> FBE Spectrum to "0".
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Sharp LC-42DH77RU,
Problem: There is a Test Pattern when start the LCD TV.
AU Optronics LCD panel T315XW01 V5
Panel Testing::: Mode AGMODEN closed point on the ground - starts to finger testfields in a circle. To open the exit...
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Some LCD,LED TV Factory Reset
Over time, I have created a listing of manufacturers and their factory reset/factory
mode procedures that may help others. This list is from my own experience, and is by
no means complete for any given manufacturer. Some have been found by searching
the internet, some by trial and error. I hope some may find this information useful.
**** WARNING!!!! ******
Some of these procedures may allow you to enter factory service modes. IF YOU DO
NOT KNOW WHAT YOU ARE DOING, DO NOT MAKE CHANGES TO SETTINGS IN FAC-
TORY MODES!! Improper settings may cause undesired operation, and could result in
a situation where your TV cannot boot/turn on.
YOU ARE USING THESE PROCEDURES AT YOUR OWN RISK!!
Factory Resets / modes For all listed procedures start with TV on, in TV mode, un-
less otherwise instructed. After procedure is complete, unplug set and re-plug in to
finish reset. If more than one procedure is listed for a given manufacturer, try the dif-
ferent ones until you see which one works for your set.
Samsung (European)
Power off, Info - Menu - Mute - Power, then find factory reset and execute option.
LG/Zenith:
Hold MENU on TV and MENU on remote for 5~10 seconds, then select reset option.
NEC:
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While powering on hold "MENU" or "INPUT" on TV, depending on model. (Only disa-
bles error lock out/buffer and puts TV in temporary service mode.)
To reset to factory, on remote, Off Timer - Menu - Exit - Off Timer, then select reset
option.
Vizio Service Menu Method 1
1. Turn The TV off.
2. Press and hold the {CH +} & {CH -} buttons on the TV.
3. Then press and release the {POWER} button on the TV.
4. Release the {CH +} & {CH -} buttons.
5. Now press the {MENU} button on the remote.
6. You should get your regular menu up, but with a "F" in the bottom right corner of
the menu (This is for factory).
7. Press and hold the {MENU} button for few seconds.
8. The Service Menu will be displayed.
Vizio Service Menu Method 2
1. Turn The TV off.
2. Press and hold the {CH +} & {CH -} buttons on the TV.
3. Then press and hold the {POWER} button on the TV.
4. Keep all three buttons pressed for few seconds.
5. Now press the {MENU} button on the remote.
6. You should get your regular menu up, but with a "F" in the bottom right corner of
the menu (This is for factory).
7. Press and hold the {MENU} button for few seconds.
8. The Service Menu will be displayed.
Vizio Service Menu Method 3
1. Press and hold the {EXIT} button on the remote for 3 seconds then release it.
2. Then press the {1} {2} {3} buttons on the remote.
3. To exit, press the {EXIT} button.
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GV42L FHDTV10A / JV50 / SV42 / SV320XVT / SV370XVT / SV420M /
SV470M / SV420XVT1A / SV470XVT1A /
VECO320L1A / VO22L / VO32 / VO37 / VO47L / VOJ320 / VOJ370 / VP322 /
VP42 HDTV20A / VP422 / VS420LF1A /
VU42 / VW32 / VW37 / VW42 / VX20 / VX32 / VX37 HDTV10A /VX42
Push "Menu" on remote and then push "Vol-" and "Input" on keypad
GV46 / P50HDM / P50HDTV10A
Press "Ch-" and "Ch+" buttons together once on keypad
GV42 / L42 / VP42HDTV10A / VP50 / VX37
Press and release "Menu" on keypad. Hold "Ch-" and "Ch+" buttons on keypad, then
hold "Menu" on remote.
P42 Hold "Ch+" and "Ch-" along with "Power" on keypad. OSD will show "F" on right
bottom portion of OSD.
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VM60P Press "Info" on remote, then press "Right Arrow," "Down Arrow," "Left Ar-
row," "Up Arrow," "Right Arrow."
The TV will show "Enter Factory Mode." Press "Menu" after message disappears and
go do to "Setup."
GV47 Press "Menu" then press the following combination: "Info," "8," "2," "0," "6."
SV420M / SV470M / VF550M / VF550XVT1A / VF551XVT / VL260M /
VL320M / VL420M / VL470M / VO320E /
VO320EP8 / VO370M / VO420E / VP504 / VP505
Press "Menu," and then press "2," "4," "8," "9."
SV420M / SV470M / VF550M / VF550XVT1A / VF551XVT / VL260M /
VL320M / VL420M / VL470M / VO320E /
VO320EP8 / VO370M / VO420E / VP504 / VP505
Press "Menu," and then press "2," "4," "8," "9."
VA19 / VA22LF / VA220E / VA26
Press "Menu" and then press the following combination: "0," "6," "2," "5," "9," "6"
VA320E / VA320M / VA370M / VT420M / VT470M
Press "Menu" and then press the following combination: "1," "9," "9," "1"
VW22 / VS370E
Press "Mute" once OR "-" twice (the dash next to the "0") and then press the follow-
ing combination: "9," "8," "7," "6"
Coby Enter menu, hi-lite “audio” then enter 8893
mode/source 2580 select “other setting”, select “shipment” then yes, after it exits
service menu you need to power set off.
Dynex Source/input 2580 Hold vol down on tv and hold #1 button on remote, vol
will jump to halfway and set shuts off. Turn back on have 1st time setup screen.
source/input 2580 menu 1999 (tv is on)
Element Menu 0000 Menu 1147
Haier Pull up menu, hi-lite “audio” then enter 8893
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Hisense In customer menu go to “Parental” enter 0000 then select “Clean All” then
power the set off and back on and first time setup menu will be there.
For some models, same as above model except in menu it islabeled “Lock”
Insignia input 2580 (tv is on)
Mitsubishi Menu 123 or menu 2470 (tv is on)
Panasonic Hold vol- on TV, press and hold menu button on remote
Philips Push menu, select”Features” then select “current software info” push
062596-info on remote then push info again then red “initialize appears and changes
color then complete. Push power button to exit
TV is on, push 062596-info on remote, then push info again, red ”initialized” appears
it turns green when completed, then push power button to exit
Polariod
Hold vol- and chan- or hold vol+ and chan+ (tv is on)
Proscan
In customer menu go to setup, select parental control menu, enter 0000 then select
“clear channel list”.
RCA Menu 1147
Sanyo Hold vol down on TV, press and hold #1 button on remote, vol will jump to
halfway and set shuts off. Turn back on have 1st time setup screen.
Samsung Mute 182 power (tv is off) (On some models, Factory Reset is on this
menu, on some, you must go into the “Options” submenu
Seiki Menu 0000
Sharp (Note – On Sharp models, you will need to look through the menus to find
the reset option) menu 1999 menu, 3481 menu 1147 While holding vol– & input but-
tons on tv plug in set when “k” appears push vol– & chan-
Sony Hold “arrow up” on remote and push power button on tv (tv is on)
Symphony Source/input 2580
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Toshiba On Menu, select “Installation”, then “System Information” press the right
arrow button, (“System Information” will change to “Factory Reset” or something
similar) follow on-screen instructions
Vision Quest Source/input 2580
Vizio In customer menu under “Help” tab is Factory Default enter 0000
Email me if you found error in this eBook
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